Bernd Greineris professor at the University of Hamburg, as well as the director of the research program on the theory and history of violence at the Hamburg Institute of Social Research.Mark Moyaris professor of national security affairs at the U.S. Marine Corps University and the author ofTriumph Forsaken: The Vietnam War, 1954–1965andPhoenix and the Birds of Prey: Counterinsurgency and Counterterrorism in Vietnam.