Jack is a DPhil Researcher in public international law at the University of Oxford. He holds an LL.B degree in Law with European Study and an LL.M degree in International and European Law. Prior to commencing his doctorate, he held the post of Research Assistant at the Institute for Public International Law, University of Bonn, under Professor Stefan Talmon. Jack has several years of research experience including positions at the International Law Programme at Chatham House, the British Institute of International and Comparative Law, and the Amsterdam Centre for International Law. Jack has worked on cases involving issues of international and EU law. His current research interests include the relationship between customary law and treaty law, state responsibility, use of force, and the applicability of these topics to new and emerging areas governed by international law such as cyber operations.