Book Examines the Blurring Line Between Soldiers and Spies

Aired: 4/23/2013 | 0:07:04 | Clip
How did the U.S. intelligence community embrace a more operational role in the days after September 11? Margaret Warner talks to New York Times national security correspondent Mark Mazzetti, who explores that transition in his new book, "The Way of the Knife: The CIA, a Secret Army, and a War at the End of the Earth."