Professor Ben Saul is Challis Chair of International Law at the University of Sydney. He has taught at Harvard, Oxford, The Hague Academy of International Law, and in China, India, Nepal, Cambodia, and Italy, and been a visiting professor at the Max Planck Institute for International Law and the Raoul Wallenberg Institute for Human Rights. He has published 20 books and hundreds of scholarly articles, including the books Defining Terrorism in International Law (2006), the Oxford Commentary on the International Covenant on Economic, Social and Cultural Rights (2014) (awarded a Certificate of Merit by the American Society of International Law), Research Handbook on International Law and Terrorism (2020), and Oxford Guide to International Humanitarian Law (2020). He is an elected Fellow of the Australian Academy of Social Sciences, an Associate Fellow of the International Centre for Counter-Terrorism in The Hague, and a former Associate Fellow of the Royal Institute of International Affairs (Chatham House) in London. Ben has advised United Nations bodies, governments, militaries and security agencies, and NGOs; practiced in international tribunals; undertaken missions in over 35 countries; and appears frequently in the international media, including writing opinion for The New York Times. He has a doctorate from Oxford and honors degrees in Arts and Law from Sydney.