Daniel H. Nexon is Professor of Government and Foreign Service at Georgetown University. He is the author or editor of three other books and the former lead editor of International Studies Quarterly. During 2009–2010 he worked in the Office of the Secretary of Defense (Policy) in the Russia, Ukraine, and Eurasia office. In 2016 he was one of two coordinators for a group of volunteers that worked on foreign policy issues for the Bernie Sanders campaign, and he remains active in debates about progressive foreign policy.