Ph. D., University of Bern, 1985. Founder and head of ECOR. Professor for Peace Studies, Hiroshima Peace Institute (HPI) of the Hiroshima City University, Japan. Senior researcher, Copenhagen Peace Research Institute (COPRI), 1997-1999. 1999-2001 Research Director at the Institute fur Ethnizitätsforschung und Konfliktbearbeitung (IFEK), Moers.

Publications include: Rwanda: Proposal for the establishment of a Conflict Prevention Unit (1995), Ethno-Nationalismus im Weltsystem (1996), Ethnisierung und Völkermord in Zentralafrika (1997), Ethno-Nationalismus im Zeitalter der Globalisierung (1997), Intra-state conflicts and ethnicity (1997), Ethnizität, Biirgerkrieg und Staat (2000), Responses to Genocide (Westport / London: Greenwood Publishing Group, 2004), The Disappearance of Clausewitzean Warfare (i.p, 2005).