As radical extremism in the Middle East continues to undermine global security, it's crucial to understand and counter its roots and appeal. This episode features a discussion between David Ignatius, columnist for the Washington Post, Farah Pandith, who's with the Council on Foreign Relations and Nicholas Burns, director of the Aspen Strategy Group. How do we confront radicalism in the Middle East? What does this nightmare mean for the United States? And, what about the refugee crisis? The panelists also give thoughts on what the next president should be thinking about.