David H. Ucko, Ph.D., is an associate professor at the College of International Security Affairs at the National Defense University in Washington DC. He teaches courses on counterterrorism and counterinsurgency, and researches war-to-peace transition, civil wars and military intervention. He is the author of Counterinsurgency in Crisis (Columbia UP, 2013), The New Counterinsurgency Era (Georgetown UP, 2009), and co-editor of Reintegrating Armed Groups after Conflict (Routledge, 2009).Dr Ucko is also an adjunct fellow at the Department of War Studies, King's College London, where he supports a Norwegian government-sponsored programme on conflict, development and security. The research programme examines the use of force in peace operations; the role of international organisations in war-to-peace transitions; and the political reintegration of armed groups following war.Dr Ucko has held visiting fellowships at a series of thinktanks and research institutions. From 2008 to 2010, he was a Transatlantic Post-Doctoral (TAPIR) Fellow at the RAND Corporation in Washington DC and at the Stiftung Wissenschaft und Politik (SWP) in Berlin. During this fellowship, his main areas of research included counterinsurgency, reintegration of armed combatants, and the future of NATO. Previously, he worked as a visiting fellow at the Institute for National Strategic Studies at the NDU, and the International Institute for Strategic Studies-US. In 2001-2003, he worked as a Deputy Defense Analyst at the IISS in London, where he helped create and develop the Armed Conflict Database, an online and interactive repository of information on conflict worldwide.Dr Ucko obtained his Ph.D. at the Department of War Studies in 2007, with a thesis examining the US military's institutional learning of counterinsurgency in the 2001-07 period. In 2001, he was awarded a First Class BSc in International Relations from the London School of Economics and, in 2004 a MRes at the Department of War Studies.