Prepared for the International Studies Association Conference February 17-20, 2010 New Orleans, LAAcademic literature on counterinsurgency (COIN) is rich, and includes theories that delineate how to fight insurgents and case studies on historic and contemporary conflicts. In practice, however, waging a successful COIN campaign remains one of the toughest forms of warfare and, more often than not, results in defeat. This paper compares the theoretical stages in COIN—population engagement, stabilization, and the creation of a viable state1—with the challenges of winning these battles and linking them to victory in practice, focusing particularly on recent U.S. experiences in Iraq and Afghanistan. It argues that, operationally, the United Stat...