Former Undersecretary of Defense & Counselor, German Marshall Fund
Derek Chollet served in senior positions during the Obama administration at the White House, State Department, and Pentagon, most recently as the U.S. assistant secretary of defense for international security affairs. He is currently a counselor and senior advisor at the German Marshall Fund of the United States, an adjunct senior research scholar at Columbia University’s Institute of War and Peace Studies, and a regular contributor to Defense One and many other publications. His books include The Long Game: How Obama Defied Washington and Redefined America’s Role in the World, America Between Wars: From 11/9 to 9/11, coauthored with James Goldgeier, and The Unquiet American: Richard Holbrooke in the World, coedited with Samantha Power. He lives in Washington, D.C., with his family.