Alette Smeulers, Ph.D (2003) in Law, Maastricht University is Director of the Amsterdam Centre of Interdisciplinary Study of International Crimes and Security at VU University Amsterdam. She recently published and edited volume Collective Violence and International Criminal justice (Intersentia 2010).Fred Grünfeld, Ph. D (1991), Maastricht, is Professor in the Causes of Gross Human Rights Violations and in International Relations at the Universities of Utrecht and Maastricht at the Centre of Conflict Studies in Humanities and the Centre for Human Rights in Law Faculties plus at the University College Maastricht. In 2007 he published The failure to prevent genocide in Rwanda in this International and Comparative Criminal Law Series of Martinus Nijhoff Publishers.