Bruce Hoffman is the director of the Center for Security Studies and director of the Security Studies Program at Georgetown University’s Edmund A. Walsh School of Foreign Service. He is also a senior fellow at the U.S. Military Academy’s Combating Terrorism Center. His previous books include Inside Terrorism, The Evolution of the Global Terrorist Threat: From 9/11 to Osama Bin Laden’s Death, and The Failure of British Military Strategy Within Palestine, 1939–1947.