Draft: Please do not cite.
THE ROLE OF COERCION IN LAW:
AN ANALYSIS OF INTERNATIONAL LAW
SANDRA RAPONI
ABSTRACT: International legal scholars and lawyers have primarily tried to refute the objection
that international law is not really law because it lacks a supranational system of coercive
sanctions by demonstrating that international law is in fact coercively enforced albeit it in
decentralized ways. I will focus instead on the presumption behind this skeptical view – the idea
that law must be coercively enforced. First, I argue that coercive enforcement is not conceptually
necessary for law or legal obligations. Second, I consider the claim that coercive enforcement is
nonetheless necessary for instrumental reasons. I argue that while physical coercion is
instrumentally useful for increasing compliance in the domestic case, this is less effective and
more problematic in the international case. In considering what then is essential and distinctive
about law and what would increase the effectiveness of international law, I propose that, first,
international law needs to be generally accepted as binding by states, officials, and other agents,
and second, that international legal rules should be determinatively interpreted and applied by
authoritative adjudicative and administrative institutions.
In 2009, the American Society of International Law organized a panel at is annual meeting to
discuss the question, “is international law law?” While many international legal scholars
were frustrated with having to discuss this question and instead wanted to focus on how
international law affects state behaviour, Oona Hathaway and Scott Shapiro argue that the
question of whether international law is law still matters a great deal.1 I agree. Given that
legal systems are morally valuable institutions, whether states and other agents ought to
respect, support, or obey international law depends in part on whether it is considered to be
real law.2 Reflecting on this question can expand our understanding of the nature of law in
the domestic case as well.
Those who continue to present the skeptical view that international law is not “law”
often take the important features of domestic legal systems within modern states as
paradigmatic of law and then apply this conception of law to the global level.3 International
1
Oona Hathaway and Scott J. Shapiro, “Outcasting: Enforcement in Domestic and
International Law,” Yale Law Journal 121 (2011): 252-349, at 255.
2
Hathaway and Shapiro, at 255.
3
This model is supported by modern social theory. Thomas Hobbes, John Locke, and
Immanuel Kant argue that a lawful condition in which rights can be secured requires a
supreme sovereign with centralized legislative power that makes law, a centralized
adjudicative power that interprets and applies the law to particular cases, and a centralized
2
law fails to satisfy this model since it does not have a world government that can make law
and enforce these laws through a supranational system of sanctions, including an independent
international military force. There are important practical and normative difficulties with
creating this kind of a coercive world government. First, it seems unlikely that states would
agree to relinquish enough of their military resources and personnel to the control of a world
government. Second, even if a coercive world government could be created, there are good
reasons to doubt whether it would function in democratic and legitimate ways. John Rawls
wrote that he agreed with Kant that a world state (“a unified political regime with the legal
powers normally exercised by central governments”) would either be a global despotism or
would rule over a fragile empire torn by frequent civil strife as different peoples tried to
regain their autonomy.4 Given these concerns, it is important to consider how international
society can be governed by law without a coercive world government.
In this paper, I will focus on the issue of coercive enforcement and the skeptical
argument that since international law is not effectively enforced against states by a
supranational system of coercive sanctions, it is not real law. I will use the term “coercive
enforcement” to refer to the use of force or the threat of sanctions to increase compliance with
the law.5 As Hathaway and Shapiro note, this seems to be the principle objection made by
critics.6 This objection may seem persuasive since a distinctive feature of legal rules within
coercive power that enforces the law through sanctions. Based on this view, some
contemporary scholars argue that a world state with these three features is required for a
lawful condition at the international level.
For example, the following scholars argue for a coercive world state based on Kant’s legal
theory: Sharon B. Byrd and Joachim Hruschka “From the State of Nature to the Juridical State
of States,” Law and Philosophy: An International Journal for Jurisprudence and Legal
Philosophy, (2008) 27.6: 599-641. Sharon B. Byrd and Hruschka, Joachim, Kant’s Doctrine
of Right: A Commentary. (Cambridge: Cambridge University Press, 2012); Hoffe, Otfried.
Kant's Cosmopolitan Theory of Law and Peace (Cambridge University Press, 2006).
4
John Rawls, The Law of Peoples (Cambridge: Harvard University Press, 1999), at 36.
5
This is the traditional conception of legal coercion in law and political theory. Others have
proposed other views of coercion in law. For example, Ekow N. Yankah argues that we
should not conflate the coerciveness of law with the idea that law is backed by the threat of
sanctions. He argues that “coercion occurs when sufficiently high pressure is applied to
compel the adoption of a certain course of action.” Ekow N. Yankah, “The Force of Law: The
Role of Coercion in Legal Norms,” The University of Richmond Law Review, 42.5 (2008):
1195-1256 at 1216-17. Scott Anderson argues that the “enforcement approach” to coercion,
which focuses on the coercier’s ability to inhibit actions by the use of force or threat of force,
is a superior way to understand coercion and a more fundamental way to understand coercion
in political, moral and legal philosophy than the “pressure approach.” Scott A. Anderson,
“The Enforcement Approach to Coercion,” Journal of Ethics & Social Philosophy 5.1 (2010).
6
Hathaway and Shapiro, at 255-56. They cite Anthony D’Amato’s description of this
objection amongst students of law:
Many serious students of the law react with a sort of indulgence when they encounter the
term "international law," as if to say, "well, we know it isn't really law, but we know that
international lawyers and scholars have a vested professional interest in calling it 'law.'"
Or they may agree to talk about international law as if it were law, a sort of quasi-law or
3
domestic legal systems appears to be the fact that, unlike moral rules, they can be coercively
enforced by political institutions. While most legal philosophers largely agree with H.L.A.
Hart’s persuasive rejection of John Austin’s command theory of law, the view that sanctions
are a necessary, central, and distinguishing feature of law still persists, particularly outside
legal philosophy.7
There are two main responses to the skeptical view. First, one can show that
international law is sufficiently enforced without a world government or a supranational
system of coercive sanctions, and second, one can reject the claim that coercive enforcement
is required for law. Many scholars have defended international law by using the first strategy.
While some argue that international law is sufficiently coercive since states can enforce it
through military action and economic sanctions, others argue that compliance with
international law can be achieved through less coercive means, and even through noncoercive means. I will focus on the second response and I will consider broader conceptual
issues regarding the connection between law and coercive enforcement.
In the first section of this paper, I will provide an overview of the main positions and
arguments on this issue. In the second section, I will challenge the assumption that coercive
enforcement is central and necessary for law by supporting H.L.A. Hart’s argument against
John Austin’s command theory of law, while also considering some problems with applying
Hart’s theory of law to the case of international law. While Hart’s argument shows that
sanctions are neither central to law, nor sufficient for law, he does not argue that sanctions are
not a necessary feature of law. To defend this stronger claim, I will appeal to Joseph Raz’s
arguments on this issue in the third section. I will also consider recent objections to Hart and
Raz by Frederick Schauer and Ekow N. Yankah.
In the fourth and fifth sections, I will consider whether supranational coercive
enforcement may nonetheless be required to increase the effectiveness of international law or
for normative reasons. In response to the former, I will argue that it is important to keep such
instrumental considerations distinct from the question of what is required for rules, norms,
practices and institutions to qualify as “law,” and secondly, I will argue that there are
significant problems with the use of centralized coercive sanctions in the international case
that may not in fact make it as effective as is often assumed.
Finally, I will address what is required to have law at the international level. If not
coercive enforcement, then what? I propose that the most important elements for regarding
international law as law and for developing the rule of law at the global level include the
following. First, states and officials that administer and apply international law must
near-law. But it cannot be true law, they maintain, because it cannot be enforced: how do
you enforce a rule of law against an entire nation, especially a superpower such as the
United States…?
Anthony D’Amato, “Is International Law Really ‘Law’?” Northwestern University Law
Review 79 (1985): 1293 at 1293.
7
Robert C. Hughes notes that while many legal philosophers have questioned the view that
coercion is central and necessary for law, this view continues to be presupposed within
political philosophy. See Robert C. Hughes, "Law and Coercion," Philosophy Compass 8.3
(2013): 231-240. Two recent articles within legal philosophy that defend the coercive feature
of law are Ekow N. Yankah and Frederick Schauer. Frederick Schauer, “Was Austin Right
after All? On the Role of Sanctions in a Theory of Law,” Ratio Juris, Vol. 23.1 (2010): 1-21.
4
generally accept that international law is binding on them. This provides reasons to focus
more on increasing the perceived legitimacy of international law rather than on developing
stronger sanctions. Second, there must be impartial and independent adjudicative and
administrative bodies with the recognized authority to determine and apply legal rules. While
various kinds of enforcement may be needed to increase the effectiveness of international law
in practice, the authoritative and impartial application of law should be seen as having
primary importance since it is necessary for determining when and how enforcement can be
used.
1. OVERVIEW OF THE MAIN OBJECTIONS AND RESPONSES
Allen Buchanan refers to the argument that without a global coercive power to effectively
enforce international rules, they are not true law and cannot constitute a true legal system, as
the “Legal Nihilist argument.”8 This position begins with a particular view of what features
are required for a legal system, it finds that some of these features are lacking in the
international case, and it then concludes that international rules are simply not law, as if by
definition.9 The Realist view of international relations is even more skeptical about
international law. It regards the relation between states as a perpetual Hobbesian state of
nature in which states act solely based on their interests. Under the Realist view, while states
may agree to be bound by certain treaties and rules of international law, they comply with
these rules and treaties only when it serves their interests, and not because they are under any
obligation to do so.10 This goes further than the Legal Nihilist view because the Legal Nihilist
could still hold that there are obligations between states, but that without external coercive
enforcement, these obligations are merely self-binding moral obligations rather than
externally binding legal obligations.11 The Realist argues that states are neither bound by
8
Allen Buchanan, Justice, Legitimacy and International Law (Oxford University Press,
2005), at 46.
9
John Austin presents this argument. John Austin, The Province of Jurisprudence
Determined. (Cambridge: Cambridge University Press, 1995), at 21
10
Hans J. Morgenthau is the most influential twentieth century proponent of political realism
in international relations. Hans J. Morgenthau, Politics Among Nations: The Struggle for
Power and Peace, 6th ed., (New York: Alfred A. Knopf, 1985); and Hans J. Morgenthau, In
Defense of the National Interest: A Critical Examination of American Foreign Policy, (New
York: Alfred A. Knopf, 1951). Other influential realists include E.H. Carr, Reinhold Niebuhr,
and Kenneth Waltz (a neorealist). See Kenneth Waltz, Theory of International Politics
(Addison-Wesley, Reading, MA, 1979). More recently, this view has been defended by Jack
L Goldsmith and Eric A. Posner in The Limits of International Law. (New York: Oxford
University Press, 2005). They analyze international politics based on rational choice theory.
11
This view is most clearly presented by John Austin. Jürgen Habermas also makes this
argument in his criticism of Kant’s proposal for a voluntary league of states in "Kant's Idea of
Perpetual Peace, with the Benefit of Two Hundred Years' Hindsight" in Perpetual Peace:
Essays on Kant's Cosmopolitan Ideal, translated by James Bohman, edited by James Bohman
and Matthias Lutz-Bachmann (Cambridge: The MIT Press, 1997).
5
legal nor moral obligations to comply with international legal rules and institutions; states
only act in accordance with international law when it is in their interest to do so.12
The common response to the coercive enforcement objection by international legal
scholars has been to argue that even without a supranational enforcement body, international
law is still coercively enforced by states in a decentralized way. Although Kelsen considered
law to be a coercive order that must be backed by sanctions, he regarded war and reprisals by
states against other states as providing the necessary coercive element for law at the
international level.13 He believed that appropriate sanctions for the violation of international
law could be determined by just war theory.14 According to the UN Charter, the Security
Council can authorize states to use forcible measures to enforce international law and to
maintain or restore peace and security.15 While this seems like a good example of coercive
enforcement, in practice, the power of the Security Council in this respect has been severely
limited since the Council has been deadlocked by the veto power of its five permanent
members. International law also includes the use of non-forcible countermeasures such as
economic and trade sanctions in response to states that breach their treaty obligations.16
Given the non-uniform way these coercive measures are used, particularly since they rely on
the willingness of states to use force or impose economic or trade sanctions, some skeptics are
not satisfied with response. Realists point out that states are only willing to take such action
12
See Goldsmith and Posner. The Limits of International Law.
Hans Kelsen. Principles of International Law. (New York: Rinehart & Company, Inc.
(1952); and Hans Kelsen, "Sanctions in International Law Under the Charter of the United
Nations." Iowa Law Review 31 (1945): 499.
14
He defines a sanction as “a coercive act provided for as the consequence of a definite
conduct of the state, a forcible interference in the normally protected sphere of interests of the
state responsible for this conduct.” Principles of International Law, at 19. In the case
individuals, interferences in the normally protected spheres include depriving one of life,
freedom and property. In the international case, sanctions include military action, confiscating
property, and nonfulfillment of treaty obligations in relation to a state that has violated
international law (24).
15
Only the Security Council can authorize the use of coercive force to enforce international
law. The Charter prohibits the use of force by states except for self-defence and collective
self-defence against attacks subject to the authority of the Security Council to take action to
maintain or restore peace and security (Article 51).
16
Under customary international law, states can use a variety of non-forcible
countermeasures, such as trade embargoes, freezing of assets, and the suspension of
performance of treaty obligations in response to states that breach their treaty obligations.
Non-forcible countermeasures to a state’s breach of its treaty obligations are part of
customary international law and they have been recognized as such by International Court.
There are four recognized conditions on the use of non-forcible countermeasures: (1) they
must be intended to obtain redress for the wrong committed; (2) prior notification of the
countermeasures and their purposes must be given; (3) they must be proportionate to the
violations complained of; and (4) countermeasures which affect individuals are subject to
certain limits deriving from human rights standards which form part of general international
law. Ian Brownlie, The Rule of Law in International Affairs (M. Nijhoff Publishers, 1998), at
135.
13
6
when it serves their own national interests, such as when there are other reasons for military
action or trade sanctions that will benefit them.17 This does not constitute the genuine
enforcement of legal rules.
Some contemporary international legal scholars have argued that it is a mistake to
think of enforcement solely in terms of military action and economic sanctions. They argue
that there are non-coercive means of increasing compliance with international law, such as
through political pressure and the force of public opinion.18 For example, Scott Shapiro and
Oona Hathaway have recently responded to the coercive enforcement objection by arguing
that international legal institutions typically deploy “external outcasting” rather than physical
force to enforce international legal rules.19 Member states can increase compliance with
international law by simply denying the benefits of social cooperation and membership to
disobedient states. This kind of response would be stronger if we could first challenge the
underlying assumption that coercion is an essential or necessary feature for law.
This leads us to the second line of response to the coercive enforcement objection –
the argument that coercive sanctions are not a necessary or central feature of law, not even
within domestic legal systems.20
2. HART’S REJECTION
LEGAL PHILOSOPHY
OF THE
COMMAND THEORY
OF
LAW
AND
HIS CONTRIBUTION
TO
2.1 THE COMMAND THEORY OF LAW: HOBBES & AUSTIN
The view that effective, centralized enforcement through coercive sanctions is required for
law is most strongly defended by Thomas Hobbes and John Austin. According to Hobbes,
law is not counsel but commands backed by force: commands of a supreme sovereign
addressed to those who are obliged to obey him. For Hobbes, the purpose of law is to provide
order, stability and certainty. There is the constant threat of war between individuals in the
state of nature because as individuals pursue their own interests, conflicts between them are
inevitable, and each person will have her own conception of what is right. Hobbes argues that
in order to leave this state of insecurity, a supreme sovereign is needed to conclusively
determine what the laws are, to apply the laws to particular cases and settle conflicts, and to
enforce these laws through the threat of force. In an important passage, Hobbes writes that
there can be no covenants without the sword. Without a sovereign power with the capacity
and authority to enforce contracts with the threat of punishment, individuals will have good
reason to violate their agreements and the rights of others when it is in their best interest to do
so, and when they can get away with it without suffering negative consequences. Hobbes has
a prudential account of obligation. He argues that we cannot be obligated to do something
17
For example, Goldsmith and Posner, 28-29.
Richard Falk argues that the civil society can provide “normative restraint” and force states
to comply with their international obligations. Revitalizing International Law (Iowa State
University Press, 1989), at 100.
19
Hathaway and Shapiro.
20
Buchanan and Anthony D'Amato present this argument. Anthony D’Amato, International
Law: Prospect and Process (New York: Transnational Publishers, 1987).
18
7
that is contrary to our interests. If you and I make a contract, it is not rational for me to
comply with my own contractual promises without any effective assurance that you will
respect our agreement, since I would be acting against my own interests.21 The threat of
punishment gives everyone a reason to comply, and consequently, it gives each individual
effective assurance that others will follow their agreements. The same argument applies to
any social contract between people. In order for us to be obligated to follow any rules, these
must be first enforced by a sovereign power.
John Austin similarly conceives of law as commands by an “uncommanded
commander” backed by the threat of sanctions.22 Like Hobbes, he believes that it is the
sanction itself that creates the obligation, and that without the sanction, there is no legal
obligation. He writes that commands that are not backed by sanctions are not properly called
laws.23 Austin concludes that international law is not law but “positive morality” because it
lacks coercive sanctions.24
2.2 HART’S REJECTION OF THE COMMAND THEORY
CONCEPTION OF LEGAL OBLIGATION
OF
LAW
AND THE
NORMATIVE
Hart’s persuasive rejection of Austin’s command theory of law can be used to challenge
coercion-based views of law that hold that the existence of a central coercive power to enforce
21
Hobbes writes in Chapter 14: “For he that performs first has no assurance the other will
perform after; because the bonds of words are too weak to bridle men's ambition, avarice,
anger, and other Passions, without the fear of some coercive Power. … But in a civil estate,
where there is a Power set up to constrain those that would otherwise violate their faith, that
fear is no more reasonable; and for that cause, he which by the Covenant is to perform first, is
obliged so to do. Thomas Hobbes, Leviathan (London: Penguin Books, 1968), at 196.
22
Austin argues that a “command is distinguished from other significations of desire, not by
the style in which the desire is signified, but by the power and the purpose of the party
commanding to inflict an evil or pain in case the desire be disregarded.” The Province of
Jurisprudence Determined, 21.
23
Austin, 33, 135-136.
24
Austin, 171. The term “positive morality” refers to the de facto moral rules that happen to
exist in international society. A.V. Dicey similarly described international law as consisting
of “rules of public ethics, which are miscalled international law.” A.V. Dicey, Lectures
Introductory to the Study of the Law of the Constitution (Macmillan, 1885), at 23; cited in
Simon Chesterman, “An International Rule of Law?” American Journal of Comparative Law,
56, (2008), 331-361, at FN150.
As I noted above, this assessment of international law has also been presented by Habermas
in his article on Kant’s “Perpetual Peace.” Based on Kant’s legal theory, Habermas argues
that legal obligations must be externally binding. Since international law lacks supranational
coercive sanctions, he concludes that it can only create voluntary or self-binding moral
obligations and not distinctively legal obligations.
8
the law through sanctions is a necessary and central feature of law and legal obligations.25
Hart argues that while Austin’s view of law as commands backed by threats has some
affinities and connections with law, there is a danger of exaggerating this connection and
obscuring the special features that distinguish law from other means of social control.26
According to Hart, this theory views law as similar to the situation of a gunman saying to his
victim, “give me your money or your life,” except that in this case, the gunman says it to a
large number of people who are used to this and habitually surrender their money to such
threats. Hart argues that that there is more to law than obeying commands out of fear of
punishment.27 While the criminal law consists largely of rules that are like commands that are
obeyed or disobeyed, rules that enable individuals to make contracts, wills and trusts are not
designed to obstruct antisocial behaviour. Rather than saying: “do this regardless of whether
you want to or not” they say “ if you wish to do this, this is the way to do it.” Constitutional
legal rules that constrain government action also do not fit the command model of law. For
example, when a government’s legislation violates a constitutional law, a court can nullify
that legislation, but it does not use a coercive mechanism or the threat of sanctions to force the
government to do this.
More importantly, the command theory of law distorts the role that the idea of
obligation and duty play in legal discourse. Hart argues that it identifies the normative idea of
“having an obligation” or “being bound” with the observation that “one is likely to suffer the
sanction or punishment threatened for disobedience.” 28 Even in domestic law, where there
are effective organized sanctions, Hart argues that we have to distinguish the variety of
reasons given for the obligations created by law. He emphasizes the importance of the
internal perspective by which legal rules are accepted as guiding standards of behaviour.29 He
recognizes that rules that give rise to obligations or duties generally call for some sacrifice of
private interests and are generally supported by serious demands for conformity and insistent
criticisms of deviations. However, he argues that once we reject the conception of law as
essentially an order backed by threat (“the gunman situation writ large”), there seems no good
reason for limiting the normative idea of obligation to rules supported by organized coercive
sanctions.30
While the command theory of law emphasizes obedience towards law based on the
fear of sanctions, Hart emphasizes the importance of the normative aspect of law from the
internal perspective: the idea that individuals and officials are bound by legal rules because
they accept these rules as valid legal rules and hence, as binding.31 They take themselves to
25
As Buchanan argues, to deny international law the title of “law” because it lacks a
Hobbesian enforcement agent is to assume a now discredited Austinian conception of law and
to ignore the realities of systems that certainly deserve the title of legal system (47).
26
Hart, The Concept of Law, 213.
27
H.L.A Hart, “Positivism and the Separation of Law and Morals” Harvard Law Review
(1958): 593-629.
28
Hart, 218.
29
Hart, 218.
30
Hart, 218.
31
According to Hart, it is not necessary to answer the question of why people ought to obey
the law in a foundational way. The motives for voluntarily supporting the rules of a legal
system may be extremely diverse. While a legal order may be at its healthiest when there is a
9
be under an obligation to obey laws that are created in the manner that is recognized to be
authoritative. This provides a better account of legal obligations because it is the acceptance
of valid legal rules as binding that justifies the enforcement of law, and not the other way
around.32 While sanctions are normally used to reinforce legal duties, the mistake that
Hobbes and Austin make is to view the very existence of legal duties as dependent on
sanctions.33 As Leslie Green argues:
“…the normal function of sanctions in the law is to reinforce duties, not to constitute
them. It is true that one reason people are interested in knowing their legal duties is to
avoid sanctions, but this is not the only reason nor is it, contrary to what Oliver
Wendell Holmes supposed, a theoretically primary one. Subjects also want to be
guided by their duties — whether in order to fulfil them or deliberately to infringe
them — and officials invoke them as reasons for, and not merely consequences of,
their decisions.”34
The fact that domestic laws are enforced provides one reason why individuals obey the law,
but it is not what makes them law, and it is not the reason they are binding.
According to Hart’s view then, the idea that a law is binding on us means that the legal
rule is valid and that we can be said to have some obligation under it. The issue then is
whether the rules of international law can meaningfully be said to give rise to obligations.35
What matters is that states and other agents take themselves to be under obligations of
international law, and that officials, such as judges on domestic and international courts and
officials of international institutions, take states and themselves to be bound by international
law. As Hart states, “the proof that ‘binding’ rules in any society exist, is simply that they are
thought of, spoken of, and function as such.” 36
generally diffused sense that it is morally obligatory to conform to it, nonetheless, adherence
to law may not be motivated by it, but by calculations of long-term interest, or by a desire to
continue a tradition, or by disinterested concern for others. Hart argues that there is no good
reason for identifying any of these as a necessary condition of the existence of law among
individuals or states. Hart, 231-232.
32
According to Hobbes’ prudential account of obligation, we are only under an obligation to
obey laws when they are externally enforced against all because we are not obligated to act
contrary to our own interests..
33
Hart, 217-218.
34
Leslie Green, “Legal Obligation.” Stanford Encyclopedia of Philosophy.
35
Questions about the binding character of international law express a doubt about the general
legal status of international law, not its applicability. He argues that a better way to formulate
the question is “can such rules as these be meaningfully and truthfully said ever to give rise to
obligations?” Hart, 216.
36
Hart, 211. Hart suggests that an important feature of a legal system is that its subjects and
administrators regard legal rules as binding on them, even though their reasons and motives
for this may differ. Hart points to various elements in the relations of states that support the
statement that there are rules among states that impose obligations upon them. Hart notes that
rules could not exist or function in the relations between states unless a significant majority of
states accepted the rules and voluntarily co-operated in maintaining them. While he
10
Many theorists of international law similarly argue that what makes international law
“law” is not whether or not it is analogous to domestic law, and not whether or not it uses
sanctions to enforce international legal rules, but whether states themselves accept
international law as binding.37 As Hart notes, in the practice of states, certain rules are
regularly respected at the cost of certain sacrifices, claims are formulated by reference to
them, and breaches of the rules expose the offender to serious criticism and are held to justify
claims for compensation or retaliation. An often-cited observation of this is Louis Henkin’s
statement that "almost all nations observe almost all principles of international law and almost
all of their obligations almost all of the time.”38 There is a complex web of international legal
rules that receive a high degree of compliance, such as international laws concerning
telecommunication, postal services, banking, aerial navigation, trade, and the law of the sea.
Unfortunately, we of course get quite a different impression when we see states
violating fundamental rules of international law, such as aggressive action against other states,
torture, and genocide. However, even when states oppose interference in their internal affairs,
they often appeal to basic principles in international law, such as the internal sovereignty of
states. Even when states take aggressive against other states, they try to justify their actions
as in accordance with international principles regarding the right to self-defense. As in the
domestic case, the fact that laws are generally recognized as binding does not guarantee that
actors will always comply with all particular laws. The fact that some agents violate laws
does not prove that they are not generally recognized as binding.
Based on Hart’s account, there is a second factor that makes the rules of international
law legally binding: they must come into being in the manner accepted and recognized as
authoritative.
2.3 THE ROLE OF SECONDARY RULES IN HART’S LEGAL THEORY
What does it mean for a legal rule to be valid? For Hart, the special features of law that
distinguish it from other means of social control are best understood through the idea of the
union of primary and secondary rules.39 Primary rules are rules of conduct that confer
acknowledges that the pressure exercised on those who break or threaten to break the rules is
often relatively weak, and has usually been decentralized and unorganized, he argues that, as
in the case of individuals who voluntarily accept the far more coercive system of domestic
law, the motives for voluntarily supporting such a system may be extremely diverse:
adherence to a particular law may be motivated by a general moral obligation to act in
accordance with the law, by calculations of long-term interest, or by the desire to continue a
tradition or by concern for others, and some may be motivated by the fear of punishment.36
37
Malcolm N. Shaw, International Law (Cambridge: Cambridge University Press, 2003) and
Martin Dixon, Textbook on International Law (Oxford, 2005)
38
Louis Henkin, How Nations Behave: Law and Foreign Policy (Columbia University Press,
1979), at 47.
39
In his analysis of law, Hart contrasts a developed legal system with the union of primary
and secondary rules against a more primitive society of individuals that only has primary rules
of obligations. He treats the existence of this characteristic union of rules as a sufficient
condition for the application of the expression “legal system,” but he does not claim that the
11
obligations on individuals (for example, the rules of criminal law). Secondary rules are
power-conferring rules that are addressed to officials. They set out rules for the creation,
recognition, change and adjudication of primary rules. The most important kind of secondary
rule is the rule of recognition – the most fundamental, basic rule of a legal system that is
accepted at least by the officials who administer the legal system as specifying the sources of
law and the criteria for determining whether a rule has legal validity.
Hart makes an important contribution to legal and political philosophy by proposing
the idea of a foundational rule of legal validity. Against the modern idea of the supreme
sovereign that is outside the law and against Austin’s idea of the “uncommanded
commander,” Hart argues that legislators are constrained by foundational legal rules that
specify law-making procedures. 40 As David Dyzenhaus argues, this distinguishes legitimate
legal authority from arbitrary political power, and it places restrictions on law-makers and
legal administrators concerning their creation and application of the law.41 The ultimate
source of law then is not the sovereign’s will but foundational legal rules. Rather than the
rule of man, or the rule of a sovereign that is above the law, we have the rule of law as the
ultimate source of political authority.42
One of the reasons why Hobbes argues for a supreme sovereign that is not subject to
any other authority is to conclusively resolve issues of indeterminacy that arise from conflicts
and from the application of law to particular cases. For Hobbes, the sovereign’s authority
must be supreme because if another body could question the sovereign’s actions, then the
problem of indeterminacy arises again.43 This is part of Hobbes reasons for rejecting a right
to rebel: we need a sovereign that has the final say. For Hart, the source of law is not the
sovereign’s will but the secondary rules, and if a government violates these in its actions, then
these actions do not have the normative force of law; they are brute force. This idea is
particularly important in the international case. Instead of resting the ultimate source of law
with a sovereign global legislative and executive body, the legitimacy and authority of
international law can rest on its own foundational principles. These foundational secondary
rules also provide a determinate and authoritative way by which international legal rules are
created, identified, and applied.
2.4 PROBLEMS WITH HART’S VIEW OF INTERNATIONAL LAW
word “law” must be defined in these terms. Hart offers an elucidation of the concept of law,
rather than a definition of “law” which could provide rules for the use of this term. Hart, 213.
40
Hans Kelsen introduced a similar idea before Hart. He argued that the legal order was
based on a Grundnorm or basic norm.
41
David Dyzenhaus, “The Justice of the Common Law: Judges, Democracy and the Limits of
the Rule of Law.” In Cheryl Saunders and Katherine Le Roy (eds.) The Rule of Law (Sydney:
The Federation Press, 2003).
42
Hart would probably take issue with this analysis of the implications of his theory since he
argues that his conception of law is a merely descriptive and has no such normative
implications. I am grateful to Lars Vinx for raising this point. Regardless of what Hart
intended, I think these are important normative implications of his theory.
43
Kant presents a similar view.
12
One of the challenges with using Hart’s theory to make the case that international law is
indeed law is that Hart believed that international law lacked secondary rules of change and
adjudication which provide for legislature and courts in international law, as well as a
unifying rule of recognition which specifies the sources of law and provides general criteria
for the identification of its rules.44 Based on Hart’s conception of a domestic legal system as
a union of primary and secondary rules, this seems to lead to the conclusion that international
law is not a legal system since it lacks secondary rules. Instead, it is a simple or primitive
form of social structure that consists only of primary rules of obligation.
Hart tries to avoid this conclusion. Since he criticizes those who take domestic law to
be paradigmatic of law and then evaluate international law through an adverse comparison
with domestic law, he tries to avoid making this mistake himself.45 Consequently, since he
develops his conception of a legal system by analyzing domestic legal systems, he admits that
there may be problems with applying his conception of law as the union of primary and
secondary rules to decide the issue of whether international law is really law.
I disagree with Hart on this issue. I think the development and clarification of such
foundational rules of legal validity is particularly important for a more decentralized model of
international law. If we had a world parliament, then the test of validity for international laws
could simply be whatever the world legislature passes according to recognized procedures.
But if the creation of legal rules is more decentralized, then it is all the more important to have
clear foundational rules regarding the sources and validity of international legal rules and
obligations. Significant secondary rules of change and adjudication already exist in
international law. For example, the Vienna Convention on Treaties codifies pre-existing
international customary norms that govern the formation and effect of treaties.46 This
provides secondary rules of change since it defines what is required to make a treaty valid.
Article 39 of the treaty that created the International Court of Justice provides secondary rules
of adjudication and also lists various sources of law.47 Article 39 states that the Court should
apply international conventions, international customary law, the general principles of law
recognized by states, and juristic writings in settling disputes between states. Such secondary
rules need to be developed further but what exists so far is sufficient for a workable system of
law.48
This issue points to another limitation with appealing to Hart’s theory to defend a
decentralized model of international law against the enforcement-based objection. Hart
doubts that secondary rules exist in international law because his conception of secondary
rules is too centralized and too hierarchical, particularly his suggestion that there is an
ultimate rule of recognition that unifies a legal system. Even in domestic legal systems, it is
difficult to determine a single ultimate rule of recognition. Instead, there are various
interrelated practices, institutions, rules and agreements regarding the creation and application
44
Hart, 214.
Hart, 216.
46
Signed in 1969.
47
Established in 1946.
48
Samantha Besson considers how customary international law can also be regarded as part
of international law’s secondary rules. Samantha Besson, "Theorizing the Sources of
International Law” in Samantha Besson and John Tasioulas (eds.) The Philosophy of
International Law. (Oxford University Press, 2010.
45
13
of law that emerge over time and become generally accepted and recognized by officials and
even citizens to some extent. It is tempting to believe that a legal system’s ultimate rule of
recognition is its constitution or founding document, but the legal validity of the constitution
must rest on something else. Because Hart bases his theory of law on secondary rules and the
role of government officials, he has been criticized for still viewing law as a one-way
projection of authority; instead of grounding law on a supreme sovereign authority (as Hobbes
and Austin do), law is grounded on a hierarchy of rules.49 For example, against the
conception of law as an imposition of authority from above, Lon Fuller provides a less
hierarchical and a more interactive or reciprocal conception of law. For Fuller, law depends
neither on force, nor the exercise of authority, nor a hierarchy of rules; instead, law depends
on the effective cooperation between citizens, and lawmaking and law-applying officials.50
This interactive conception of law appears to be present in Hart’s theory of law, but
only to a limited extent. We see this feature in his consideration of what makes international
legal rules binding. An important factor for him is that the subjects of international law
(states, individuals, and other agents) recognize international law as binding on them.
However, those who support more interactive and constructivist theories of law criticize
Hart’s focus on rules instead of recognizing the important role of legal process and dialogue.
They also criticize his focus on the perspective of officials rather than on the perspective of
the subjects of law. Instead of focusing on whether there is an ultimate rule of recognition
that can provide an ultimate ground for law’s validity, it is more important to consider the
recognition and acceptance of law by its subjects.
In order for international law to provide determinacy so that it can guide and
coordinate the actions and interactions of various agents in ways that are less susceptible to
problems of bias and power politics, it is important to develop authoritative and impartial
adjudicative and administrative institutions. Ultimately, however, the parties and subjects of
international law (states, individuals, corporations, global and transnational organizations)
must recognize international law as binding, and they must accept the authority of judicial and
administrative institutions to determine what international law requires.
3. GOING BEYOND HART: IS COERCIVE ENFORCEMENT A NECESSARY FEATURE OF LAW?
There is an important objection that can be raised against my use of Hart to address the
coercive enforcement view against international law. One can argue that while Hart was
correct to criticize Austin’s and Hobbes’ reductive view of law as commands by an
“uncommanded commander” backed by the threat of sanctions, this does not support the
conclusion that sanctions are not conceptually necessary for law; it only proves that they are
not sufficient and that other features are required as well. One may agree with Hart that a
system of commands backed by threat alone does not constitute a legal system and that
Austin’s focus on sanctions leads to an inadequate understanding of legal obligations.
49
Lon Fuller, “Positivism and Fidelity to Law – A reply to Professor Hart” Harvard Law
Review 71.4 (1958): 630–672. Jutta Brunnée and Stephen J. Toope develop Fuller’s criticism
of Hart in their analysis of international law. Legitimacy and Legality in International Law:
An Interactional Account (Cambridge: Cambridge University Press, 2010).
50
Brunnée and Toope, Legitimacy and Legality, at 15 [check page].
14
However, one can argue that the claim that coercive sanctions are not conceptually necessary
for law goes too far. One can agree that there is more to law than Austin’s “commands
backed by sanctions” but still hold that coercive sanctions and other forms of coercion are
required for law and for legally binding obligations; law may still be inherently coercive.51
This objection seems quite persuasive since we tend to think of legal rules as rules that
are enforced through public coercion, and that can be so enforced. This is a significant
feature that distinguishes legal rules from other moral and social norms. Also, all legal
systems seem to depend on the widespread use of sanctions. However, while the use of
coercive sanctions to enforce law is common to all modern legal systems, is it conceptually
necessary for law? Is it possible to have law or a legal system without coercive sanctions?
Can one imagine a legal system without coercion? If so, what would be the purpose of law in
such a system?
3.1 RAZ AND THE COMMUNITY OF SAINTS THOUGHT EXPERIMENT
I want to go further than Hart and argue that while coercive sanctions are commonly used in
modern legal systems, they are not conceptually necessary for law. Joseph Raz provides a
good argument for this view. Raz imagines a society of saints in which all members of that
society act according to what they think is right. They pursue their self-interests when they
think it right to do so (they are not self-denying), but they may be wrong about what is right.52
We see this idea in the discussion of the state of nature in Locke and Hobbes: no matter how
morally good and honourable individuals may be, there will still be disagreement about what
is right. Even if all members of a society are morally good, even if they all want to honour
their agreements and respect the rights of others, they may nonetheless unintentionally harm
others or violate the rights of others by accident or due to ignorance. Conflicts will still arise
and there may be more than one way to settle certain conflicts. Law is required then to set
down general rules for all, to determine people’s remedial rights and duties, and to settle
conflicts by applying these general rules to particular cases. This highlights the central role of
adjudication in a legal system. There needs to be some authority to create, interpret, and
apply general laws.
If all members of this ideal society are motivated by these general rules and the
authority of certain institutions to adjudicate particular conflicts, and if these are regarded as
normative obligations that bind them, then punitive, coercive sanctions are not necessary.
When members of this society harm others by mistake, they will still have to pay
compensation to set things right, but this differs from punitive sanctions that are intended to
deter law-breakers.53 Punitive sanctions are only needed when individuals refuse to comply
with what the law requires or what a judge determines in a particular case. In such
circumstances, the threat of coercion both motivates compliance and provides assurance to all
that others will also comply. In the case of human beings (who are not saints), being arrested,
imprisoned, and compelled to pay fines works quite well to fulfill this purpose, even though
these are not effective enough to achieve full compliance.
51
This argument is presented by Schauer and Yankah.
Joseph Raz, Practical Reason and Norms (Oxford: Oxford University Press, 1999), 157-62.
53
Raz, 160.
52
15
Based on this hypothetical example, Raz concludes that a sanctionless legal system is
logically possible but humanly impossible.54 While it may seem strange to address this issue
by appealing to the legal system of an imaginary society of saints since this will not work for
a real society of human beings, this example suggests that some other explanation of the
normativity of laws is needed. As Raz argues, the sanction-based attempt to explain the
normativity of the law leads to a dead end; it explains one way in which laws provide reasons
for action, but it fails to explain in what way they are norms.55 If law is not necessarily or
inherently coercive even though coercive public sanctions are needed as a practical matter to
deal with the problem of non-compliance, this alters the way we think of law and legal
obligations. It is important to keep these practical and instrumental considerations distinct
from the conceptual question of what is law and what is required for a legal obligation.
Schauer and Yankah criticize Raz’s approach of determining the essential features of
law. Instead of considering what is theoretically possible, they argue that legal theory should
aim at illuminating law as it exists and as it is experienced. In their view, coercion is of
central importance to existing modern systems of law and to people’s experience of law.56
Their approach is problematic if one takes these dominant features of modern domestic legal
systems to be necessary for any system of law and if one then concludes based on this that
international law is not really “law.” This is the mistake that is made in the coercive
enforcement objection against international law. Their approach also limits the possibilities
for law. Yes, it is important to recognize that coercion is widespread and central in existing
modern systems of law and people’s experience of law. But rather than basing our conception
of law on practices that are predominant in our current domestic legal systems, it is important
to be able to ask if this is the best way for law to achieve the purposes that we think law ought
to achieve. Given the high personal and social costs of mass incarceration, it is important to
question the connection between law and coercion and to ask whether there are less coercive
ways and non-coercive ways of increasing compliance with the law.
3.2 WHAT THEN DISTINGUISHES LEGAL OBLIGATIONS
OBLIGATIONS?
FROM
MORAL
AND
OTHER
Schauer and Yankah also argue that in understanding the concept of law, it is important to
consider what distinguishes law from other normative systems, and what distinguishes legal
obligation from other kinds of obligations, such as moral and religious obligations. Since the
right to use coercive sanctions is an important distinctive feature of law, they argue that a
coercion-free account of law or legal obligation is defective.57 This view is appealing because
in a liberal society, using public coercion to enforce legal obligations is justifiable, but using
public coercion to enforce moral or religious obligations is not. If one thinks that
international law is not sufficiently enforced through coercive sanctions, then why is
international law not simply a system of morality, as Austin and Habermas have claimed?
54
Raz, 158.
Raz, 162.
56
Yankah, at 1240. Schauer at 17.
57
Yankah at 1240. Schauer at 17.
55
16
Why not conceive of treaty obligations simply as a kind of moral obligation, such as promisekeeping?
While focusing on features of modern domestic legal systems that are pervasive and
distinctive is illuminating in understanding domestic law, this approach does not conclusively
answer the question of whether coercive sanctions are necessary in order for international law
tor any other system of rules and obligations to be “law.” First, non-legal and nongovernmental institutions and organizations (such as religious institutions, academic
institutions, employers, and social clubs) can also enforce their rules and increase compliance
through various kinds of sanctions short of imprisonment, such as the threat of fines,
disciplinary action, and having one’s membership or employment terminated or suspended.
Therefore, the use of punitive sanctions is not unique to law. Second, even though it is true
that the use of stronger coercive sanctions, such as imprisonment, is something that
distinguishes domestic legal rules from other social rules, this is only true for some domestic
laws. As discussed above, many laws are not enforced through coercive sanctions, such as
wills, contracts, and constitutional law. Third, we can distinguish between moral obligations
and legal obligations on other grounds. For example, according to Hart, whether we have a
legal obligation in a particular case is determined by whether there is a valid legal rule. This
is determined by secondary rules. While individuals can make promises to each other that
give rise to moral obligations, in order to create legal obligations, a promise or agreement
between two people must accord with legal rules about is required for a valid contract. This
can be determined by a court of law. In the case of international law, rules, practices, and
procedures have been developed to determine this, and international and domestic courts have
the authority to determine this.
There are important differences between the obligations created by international law
and moral obligations that correspond to the distinction between law and morality in domestic
law and that do not concern coercion. When states reproach each other for immoral conduct
or praise themselves or others for living up to the standard of international morality, this
moral appraisal is recognizably different from the formulation of claims, demands and the
acknowledgements of rights and obligations under the rules of international law.58 What is
predominate in the arguments states address to each other over disputed matters of
international law are references to treaties, court judgments, and juristic writings. They are
often very technical, and often, there is no mention of morally right or wrong, good or bad.
For example, we can distinguish between whether NATO’s intervention in Kosovo was the
morally right thing to do, and whether it nonetheless violated existing rules of international
law. If we think that NATO violated the existing rules of international law, we may also think
that the rules, procedures, and institutions of international law should be changed to better
address such cases of humanitarian intervention.
Why does maintaining this distinction matter? Law allows us to settle conflicts in a
legitimate and authoritative way. It provides certainty, predictability, and order, and it allows
individuals in a society to coordinate their behaviour. These goals are important in the
international case as well. Rather than settling conflicts by mere brute force and the threat of
force, states can settle their disputes according to accepted legal rules and before courts of
law. The distinction between law and morality, between one’s legal and moral obligations, is
58
Hart, 228.
17
particularly important to the extent that there is moral disagreement between individuals or
societies that have different moral views.
4. IS COERCIVE ENFORCEMENT NONETHELESS NECESSARY FOR INSTRUMENTAL REASONS?
So far I have argued that coercive enforcement is not conceptually necessary for law or legal
obligations. Sanctions may however be necessary as a practical matter to give individuals,
states, and other actors additional incentives to comply with what are independently binding
legal rules. I will briefly consider whether a centralized system of coercive sanctions is
instrumentally necessary to increase compliance with international law.
One problem with the objection that a decentralized model of international law is not
effective enough to count as law is that it is not clear what would count as sufficient
effectiveness. It cannot be complete effectiveness or complete compliance since many people
continue to break the law in the United States and countries with strong legal systems, and
many escape legal punishment. Much of domestic law is not coercively enforced in practice.
Second, there are significant factual differences between the use of coercive
enforcement in the domestic case and the use of coercive enforcement in the international
case. It is easier to see why physical sanctions are possible and necessary in the case of
individuals who are approximately equal in physical strength and vulnerability. They ensure
that those who voluntarily submit to the restraints of law do not become victims of those who
would, in the absence of sanctions, take advantage of others’ respect for the law while not
respecting it themselves. Among individuals living in close proximity to each other, the
opportunities for injuring others are great, as are the chances of escape, and consequently,
natural deterrents and other reasons would not be adequate to restrain people from disobeying
the law.59
In the international case, the use of force against states is more complicated, less
efficacious, and comes at a very high cost, especially with respect to human lives. First, would
a supranational coercive body be able to enforce law in a safe and effective way? In the
domestic case, the police can use force to arrest an individual with little risk of harm to others.
However, the use of force against states is always public. When the violator of international
law is a state, it is difficult if not impossible, to direct sanctions solely against those who are
responsible for violating international law. While this is most clear with the use of military
action, economic sanctions can also cause serious harm against the poor and vulnerable
populations of a state, including citizens who may in fact oppose their government’s violation
of international law.
As Hart argues, since the organization and use of sanctions
internationally involves great risks, the threat of them adds little to other deterrents and
reasons for compliance.60
Second, natural deterrents and other reasons for compliance seem stronger in the
international case, so the need for problematic coercive sanctions may not be as important as
in the case of individuals. In the case of states, there are a limited number of actors and their
actions are public in nature. To the extent that they must interact with each other in our
globalized world and are dependent on future good relations with other states, this provides
59
60
Hart, 218-9.
Hart, 219.
18
strong reasons to comply with their legal obligations, particularly their treaty obligations. If I
sell a defective product to someone, that person will probably not want to interact with me
again, but I can find new customers. If word gets out, I can sell it under a different name or
move to a new area. This is much more difficult for states to do. In addition, given the public
nature of state actions, the condemnation of the violation of international law by international
institutions, non-governmental organizations, other states, and individual citizens has a
stronger role in guiding behaviour than in the case of individuals in large societies where
shame and social condemnation may have little or no effect.61 For example, as Hathaway and
Shapiro show, international legal institutions have been able to increase compliance by
denying the benefits of membership to disobedient states (“outcasting”).62
Against this different factual background, international law has developed in a form
different from that of domestic law. As Hart points out, given the large populations of
modern states, if there were no organized repression and punishment of crime, violence and
theft would be frequent occurrences. However, for states, long years of peace have intervened
between disastrous wars. This is to be expected given the risks and stakes of war and the
mutual needs of states.63 Even in the absence of a central enforcement body above states,
what the rules of international law require is still thought and spoken of as “obligatory,” and
there is still a general pressure for conformity to the rules.64
5. NORMATIVE REASONS FOR A SUPRANATIONAL SYSTEM OF ENFORCEMENT
I would like to briefly consider a final objection that also applies to the first line of response.
Regardless of whether coercive enforcement is necessary for law, to the extent that
international law is enforced in various decentralized ways, this raises a normative problem.
Whether or not a state attempts to enforce international legal rules against another state may
be based on a state’s own interests and the respective power of the states involved. If State A
is powerful and State B is not, then State A can enforce international law against B, but B
would not be able to enforce it against A. These factors undermine important norms that are
associated with the rule of law, such as impartiality and universality. International legal rules
do not seem to apply to all states equally.
While these is an important concern that needs to be addressed, it is not a good reason
for denying that international law is “law” or denying that the rule of law can exist
internationally in the absence of a supranational coercive body. Instead, the rule of law ideal
61
Unfortunately such reasons may be less compelling for very powerful states and states that
are less interdependent and less concerned with being part of an international community of
states.
62
“Outcasting: Enforcement in Domestic and International Law,”
63
Hart, 220.
64
Hart, 220. When international rules are disregarded, it is usually not on the ground that
international law is generally not “binding.” Instead, efforts are made to conceal the facts that
these rules were broken, or efforts are made to argue against the applicability of a particular
rule of international law. For example, the United States has tried to defend itself against the
charge that the war on Iraq is a violation of international law by arguing that the right to selfdefense in international law should be extended to include preemptive self-defense.
19
that the law should apply equally and impartially to all should guide the development of
international legal rules and its institutions. I will briefly suggest a few ways that
international law can begin to address these concerns without a coercive world government.
First, and perhaps most importantly, international law cannot be said to apply equally to all
states when five states have veto power over Security Council resolutions that authorize of the
use of force, and when this body is often paralyzed by this. This needs to be reformed.
Second, in order to have the rule of law, sanctions and other means of enforcement ought only
to be used in accordance with international legal rules. For example, the UN Charter defines
when states can use force, such as in cases of self-defence, and international customary law
sets out and limits the use of non-forcible countermeasures for the breach of treaties. While
the International Court of Justice (ICJ) has adjudicated both kinds of cases, a major weakness
of our current system of international law is that the ICJ does not have compulsory
jurisdiction; instead, a state must voluntarily authorize the ICJ to settle a case involving itself.
This illustrates the importance of developing and strengthening adjudicative institutions that
will apply the rules of international law in a fair and impartial way. Impartial adjudicative
institutions are needed to authorize and constrain any attempts by states or other agents to
enforce the law.
6. CONCLUSION
The main aim of this paper has been to respond to the skeptical argument that without a
centralized, supranational system of coercive enforcement that includes effective punitive
sanctions, we cannot have law or legal obligations at the international level; at best, we can
only have voluntary moral obligations. In my response, I first challenged the view that
sanctions are a central and necessary feature of law (Sections 2-3). Secondly, in response to
the argument that coercive enforcement is nonetheless necessary for the effectiveness of law
in practice, I argued that there are important factual differences between the case of
individuals within states and the relationship between states at international level that make
the use of coercion less effective and more problematic in the international case (Section 4).
While others emphasize the importance of a strong supranational system of coercive
enforcement for the development of a law-governed condition at the global level, my view is
that the following are the most important elements for a viable system of law at the global
level. First, states, international bodies, officials, and other agents must regard international
legal rules as generally binding on them. This point was supported by Hart’s theory of law
and his criticism of the command theory of law in Section 2.2. Second, the criteria for the
creation, adjudication and application of international legal rules must be clearly specified. I
argued for this point in my criticism of Hart’s claim that international law lacks secondary
rules (Section 2.4). Third, the rules of international law must be determined and applied
impartially by adjudicative bodies or other institutions with the accepted authority to do so,
such as the International Court of Justice, the International Criminal Court, the monitoring
bodies of particular treaties, as well as domestic courts. I demonstrated the importance of this
feature for law and the rule of law in my discussion of Raz’s argument (Section 3.1), in my
discussion of the distinction between moral and legal obligations (3.2), and in response to the
normative concerns that are raised against decentralized means of enforcement (Section 5).