In the last episode of The Realignment’s post 9/11 era foreign policy series, Peter Bergen, author of The Rise and Fall of Osama bin Laden and Vice President at New America, joins to discuss how Osama bin Laden’s worldview, actions, and strategies defined the post-Cold War world and how he was ultimately undone by his inability to understand how the U.S. would react to 9/11, for good for ill.