Holds a Ph.D. in contemporary history from the Sorbonne (1986) and a post- graduate degree in psychopathology from the Université Paris 5. Former post-doctoral fellow at Harvard University, Center for International Affairs (1986-1988). Professor in political science and modern history since 2007. Founder and scientific director, and since January 2011 honorary President of the international project of Online Encyclopedia of Mass Violence. Member of the editorial boards of the European Review of History, the Journal of Genocide Research and Vingtième siècle. Member of the International Association of Genocide Scholars.