Dire Tladi is a Professor of international law at the University of Pretoria and an Extraordinary Professor at the University of Stellenbosch. He is a member of the UN International Law Commission and its Special Rapporteur on Peremptory Norms of General International Law (Jus Cogens). He is also a member of the Institut de Droit International. He is formerly Principal State Law Adviser for International Law at the Department of International Relations and Cooperation and Legal Adviser of the South African Permanent Mission to the United Nations in New York. He appeared as counsel on behalf of South Africa before the International Criminal Court in relation to South Africa’s non-arrest of the Sudanese President, Omar Al Bashir. He also served as counsel on behalf of the African Union before the Appeals Chamber of the ICC in relation to Jordan’s non-arrest of Al Bashir. Creative Commons Attribution-Non-Commercial-Share Alike 2.0 UK: England & Wales; http://creativecommons.org/licenses/by-nc-sa/2.0/uk/