Stephen D. Biddle

Adjunct Senior Fellow for Defense Policy

About the Expert

Expert Bio

Stephen D. Biddle is adjunct senior fellow for defense policy at the Council on Foreign Relations (CFR) and professor of political science and international affairs at George Washington University. Before joining CFR in January 2006, he held the Elihu Root chair in military studies at the U.S. Army War College Strategic Studies Institute (SSI) and has held teaching and research posts at the University of North Carolina at Chapel Hill, the Institute for Defense Analyses (IDA), Harvard University's Belfer Center for Science and International Affairs, and the Harvard Kennedy School's Office of National Security Programs.

Biddle's book Military Power: Explaining Victory and Defeat in Modern Battle has won four prizes, including the Council on Foreign Relations' Arthur Ross Award Silver Medal for 2005, and the 2005 Huntington Prize from the Harvard University Olin Institute for Strategic Studies. His other publications include articles in Foreign Affairs, International Security, Survival, Journal of Politics, Journal of Strategic StudiesJournal of Conflict Resolution, Security Studies, New Republic, American Interest, National Interest, Orbis, Contemporary Security Policy, Defense Analysis, Joint Force Quarterly, and Military Operations Research; shorter pieces on military topics in the New York Times, Washington Post, Wall Street Journal, Boston Globe, Baltimore Sun, International Herald Tribune, Suddeutsche Zeitung, Guardian, and Defense News; various chapters in edited volumes; and thirty-one IDA, SSI, and NATO reports.

He has served as a member of the Defense Policy Board and has presented testimony before congressional committees on issues relating to the wars in Iraq and Afghanistan, force planning, conventional net assessment, and European arms control. He served on General Stanley McChrystal's Initial Strategic Assessment Team in Kabul in 2009, on General David Petraeus's Joint Strategic Assessment Team in Baghdad in 2007, and as a senior advisor to General Petraeus's Central Command Assessment Team in Washington, DC, in 2008–09. 

Biddle's research has won Barchi, Rist, and Impact Prizes from the Military Operations Research Society. He was awarded the U.S. Army Superior Civilian Service Medal in 2003 and again in 2006, and was presented with the U.S. Army Commander's Award for Public Service in Baghdad in 2007. He holds an AB, MPP, and PhD in public policy, all from Harvard University.


Columbia University Summer Workshop on the Analysis of Military Operations and Strategy (SWAMOS), co-director
George Washington University, professor of political science and international affairs
International Security, editorial board member
Journal of Strategic Studies, editorial board member
Princeton/Stanford/UCSD Empirical Studies of Conflict Project, affiliate and advisory board member
Security Studies, editorial board member
U.S. Army War College, adjunct professor