1981, Doctorate in Philosophy; 1987, Doctorate in Political Science. Professor. Adjunct Professor, University of Hamburg. Since 2008, with Berghof Foundation: until 2011 Director, Conflict Research; since 2012, Executive Director. Member, Advisory Board for Civil Conflict Prevention, German Foreign Office. Chair, Global Agenda Council on Terrorism 2011/2012, World Economic Forum. Co-Editor: Berghof Handbook for Conflict Transformation; Post-War Security Transitions. Participatory peacebuilding after asymmetric conflict (2012). Numerous publications on terrorism and related topics.