Vincent Chetail is Associate Professor of International Law at the Graduate Institute of International and Development Studies. He is Research Director at the Geneva Academy of International Humanitarian Law and Human Rights and at the Programme for the Study of Global Migration. He has published on various fields of international law, including legal theory, human rights, refugee law and collective security.Peter Haggenmacher is Emeritus Professor of International Law at the Graduate Institute of International and Development Studies. He has published on general international law, the history and philosophy of international law and Grotius.