David H. Ucko is associate professor at the College of International Security Affairs, National Defense University, and an adjunct fellow at the Department of War Studies, King”s College London. His research areas include civil war, counterinsurgency, and war-to-peace transitions. He is the author of The New Counterinsurgency Era: Transforming the U.S. Military for Modern Wars and coeditor of Reintegrating Armed Groups After Conflict.Robert Egnell is visiting associate professor and Director of Teaching in the Security Studies Program at Georgetown University. His research focuses on the conduct and effectiveness of different forms of stability operations and statebuilding. He is the author of Complex Peace Operations and Civil-Military Relations: Winning the Peace and coeditor of New Agendas in Statebuilding: Hybridity, Contingency, and History.Colin Gray is professor of international politics and strategic studies at the University of Reading, England, and an external researcher at the Strategic Studies Institute, United States Army War College.