Like it or not--and some will despise it--"The Gatekeepers" is MUST SEE for anyone concerned about Israel's future. While it is true, as one reviewer has pointed out, that excerpts from the interviews with six former heads of Shin Bet, Israel's spy agency, have been assembled and, therefore, shaped by the director, what emerges is nevertheless astounding. To be sure there are significant differences of opinion on some issues -- like the efficacy of targeted assassinations, for example--and those differences have been obscured in some reviews of this documentary. But what unites the six is a good deal more significant than what divides them. They all regard the occupation as a disaster. They are all pessimistic about the future. They have contempt for most of Israel's politicians, who, they say, are consumed by tactical considerations but have no strategy. To a man, they want peace and see it slipping away. To a man they blame settlers and extremist rabbis, together with the politicians who have enabled them. (Only Yitzhak Rabin is admired by any of the six.) Yes, it's depressing. But reality is often depressing, and this is a necessary dose of reality from men who have spent their lifetimes in Israel's service.