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PBS News Hour
New book traces the evolution of terrorism since bin Laden
Ali Soufan, a former FBI counterterrorism agent who identified the 9/11 hijackers, felt both joy and worry the night Osama bin Laden was killed. He worried that the U.S. didn't have a strategy to combat bin Laden's message, which lived on even though the al-Qaida leader was dead. The evolution of terrorism is the subject of his new book, "The Anatomy of Terror.” Soufan joins Margaret Warner.
