For decades the Israeli internal security service known as Shin Bet has labored in the shadows to thwart terrorist attacks by radicals on both sides of the Arab-Israeli dispute. Israeli filmmaker Dror Moreh convinced several former directors to discuss their controversial work -- which included assassinations and torture -- and deteriorating prospects for peace. "The Gatekeepers" was recently nominated for an Academy Award.
Director Dror Moreh talks about his Academy Award-nominated documentary, "The Gatekeepers." The film reveals the dilemmas, burdens and questions that haunt former heads of the Shin Bet, Israel's counterterrorism agency. "How do you win a war like that? When the terrorists are inside the civilian population and you need to find a needle in a haystack in the form of a terrorist?" asks Moreh.