With the world still digesting the news that terrorist leader Osama bin Laden was killed yesterday in an American commando raid in Pakistan, it is a good time to look into what drove this mysterious figure.

In February 2011, Michael Scheuer spoke to The Commonwealth Club about the hunt for bin laden. Scheuer, a 20-year CIA veteran and former head of the bin Laden task force, draws on a wealth of interviews, research, and other sources to give us a picture of the man who ordered the worst terrorist attack on U.S. soil and who eluded American efforts to capture or kill him for nearly a decade.

Listen to the audio.