Year 2012 was a great time for documentaries, and The Gatekeepers is one that excels. Six previous Shin Bet chiefs are interviewed, about their experiences running the organization previously known as the Mossad, during the past 30 years. The result is dizzying: how moral ambiguity has become the norm, how friend is no longer discernible from foe, how Israel (as one ex-chief says) is winning every battle ... but losing the war. Reminiscent of the McNamara documentary, Fogs of War, the sobering lessons here merely demonstrate what a bottomless pit the Israel-Arab conflict is. Guaranteed to shake you up.