Roger Petersen is the Arthur and Ruth Sloan Professor of Political Science. Professor Petersen studies comparative politics with a special focus on conflict and violence. He has written three books: Western Intervention in the Balkans: The Strategic Use of Emotion in Conflict (Cambridge University Press, Cambridge Studies in Comparative Politics, 2011),Resistance and Rebellion: Lessons from Eastern Europe (Cambridge University Press, 2001) and Understanding Ethnic Violence: Fear, Hatred, Resentment in Twentieth Century Eastern Europe (Cambridge University Press, 2002). He also has an interest in comparative methods and has co-edited, with John Bowen, Critical Comparisons in Politics and Culture(Cambridge University Press, 1999). He is currently researching the Iraq war and post-war reconstruction.