Emeritus Professor, European University Institute

Professor of Government, Harvard University

Professor, Department of Government, University of Essex & Peace Research Institute Oslo

Professor of Political Science, University of California, Los Angeles

Professor of political science, Lund university

Professor of Political Science, University of North Carolina, Chapel Hill

Vice President for Studies, Carnegie Endowment for International Peace

Professor of Government, Cornell University

University of Toronto

Director at WZB and Professor of Political Science, Humboldt University Berlin