Andrew Clapham is Professor of Public International Law at the Graduate Institute of International Studies, Geneva. Before he joined the Graduate Institute of International Studies Institute in 1997, he was the Representative of Amnesty International to the United Nations in New York. His current research relates to the role of non-state actors in international law and related questions in human rights and humanitarian law. Andrew Clapham is the Director of the Geneva Academy of International Humanitarian Law and Human Rights. His publications include Human Rights: A Very Short Introduction (2007), Human Rights Obligations of Non-State Actors (2006), and International Human Rights Lexicon (2005), with Susan Marks.Paola Gaeta (PhD in Law, European University Institute, 1997) was Assistant Professor (1998), Associate Professor (2001) and then Tenured Professor (2001-2010) of Public International Law at the University of Florence. She is currently Tenured Professor of International Criminal Law at the Law Faculty of the University of Geneva and Adjunct Professor of International Criminal Law at the Graduate Institute for International and Development Studies. Since 2007, she is Director of the LL.M. Programme in International Humanitarian Law of the Geneva Academy of International Humanitarian Law and Human Rights and since 2011 Director of the Academy itself. She is a Member of the Editorial Board of the Journal of International Criminal Justice and of the Editorial Board of the European Journal of International Law. Her publications include The UN Genocide Convention: A Commentary (ed.), (2009).