Dr. Vaughn Shannon is an Associate Professor of Political Science at Wright State University, Dayton, Ohio, USA. Dr. Shannon’s research on norms and perceptions related to the use of force has appeared in International Studies Quarterly, International Organization, Security Studies, and Foreign Policy Analysis. He is the co-editor of Psychology, Constructivism and International Relations: An Ideational Alliance (University of Michigan Press, 2012). He also teaches and publishes on Middle East politics and security, and is author of Balancing Act: U.S. Foreign Policy and the Arab-Israeli Conflict (Ashgate Press, 2003). Twitter: @vpshannon71.