What motivates someone to become a terrorist? That's the question former prosecutor Ken Ballen set out to tackle when he traveled to Saudi Arabia and Indonesia to interview more than 100 Islamist extremists. "We've never sat back and said, 'Let's really understand our adversaries,' " he says.
Once seen as a moderate Islamic cleric, Anwar al-Awlaki is now a jihadist hiding in Yemen, regarded as so dangerous that he reportedly is being targeted to be killed by the CIA. New York Times reporter Scott Shane explains how the American-born cleric has inspired attacks, including the recent Times Square car bombing attempt.
A discussion about terrorism with Pulitzer Prize winning journalist Tim Weiner. He writes about the CIA for "The New York Times." He talks about the changing nature of terrorism and specifically the challenges of tracking down Islamic militant Osama Bin Laden.