Stephen D. Biddle is adjunct senior fellow for defense policy at the Council on Foreign Relations (CFR). 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 (BCSIA); and the Harvard Kennedy School of Government's Office of National Security Programs.

Dr. Biddle's book Military Power: Explaining Victory and Defeat in Modern Battle (Princeton University Press, 2004) 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, The Journal of Politics, The Journal of Strategic Studies, The Journal of Conflict Resolution, Security Studies, The New Republic, The American Interest, The 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, The Guardian, and Defense News; various chapters in edited volumes; and 31 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 adviser to General Petraeus's Central Command Assessment Team in Washington, DC, in 2008-09. He holds an appointment as adjunct associate professor of international and public affairs at Columbia University.

Dr. 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 AB (1981), MPP (1985), and PhD (public policy, 1992) degrees, all from Harvard University.

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