Osama bin Laden's death calls the future of al-Qaida into question. But terrorism expert Daveed Gartenstein-Ross suggests that al-Qaida itself is alive and well — and continuing bin Laden's core strategy against America. What's the strategy? Bankrupting America. Melissa Block speaks to Gartenstein-Ross, who directs the Center for the Study of Terrorist Radicalization and is author of the forthcoming book, "Why Al Qaeda Is Winning."