Bruce Hoffman is a professor at Georgetown University s Walsh School of Foreign Service and director of the Center for Security Studies and the Security Studies Program He is also a senior fellow at the U S Military Academy s Combating Terrorism Center and a visiting professor of terrorism studies at St Andrews University Hoffman is the editor of the Columbia University Press series Columbia Studies in Terrorism and Irregular Warfare coeditor of The Evolution of the Global Terrorist Threat From 9 11 to Osama bin Laden s Death Columbia 2014 and author of Anonymous Soldiers The Struggle for Israel 1917 1947 2015