and , both senior fellows in the  program, discuss their new book "" with the director of the Brookings Institution Press Bill Finan. In the interview and in their new book, Felbab-Brown and Hamid address the origins of some of these nonstate actors and make recommendations on how the international community should address them. Also in this episode, explains how polarization and gridlock in the appropriations process create the possibility of a government shutdown in our regular “What’s Happening in Congress” segment. Subscribe to Brookings podcasts  or on , send feedback email to , and follow us and tweet us at  on Twitter. The Brookings Cafeteria is a part of the .