What is the U.S. role in Afghanistan and where and how does it end? Does the death of Bin Laden change the equation? How does Pakistan fit in? CNN’s Kiran Chetry talks to Lisa Curtis, former CIA analyst and former state department adviser, and David Rittgers, legal policy analyst at the Cato Institute and former special forces officer in Afghanistan, about the future of the U.S. war in Afghanistan following the killing of Osama bin Laden.