Sam Wordsworth QC specializes in public international law and international arbitration. He is regularly instructed by Governments in international law cases and has appeared before numerous international tribunals, including the International Court of Justice and Tribunals constituted with respect to the Law of the Sea. He advises regularly on international law matters, including questions concerning treaty interpretation, international watercourses, maritime boundaries, the law of the sea, investment treaty disputes, State immunity, sanctions, dispute settlement procedures. He is also a Visiting Professor teaching investment arbitration at Kings College, London, and is regularly instructed as counsel in investment treaty disputes, and also sits as arbitrator in a limited number of disputes. Author of chapters on investment arbitration in Oppenheim’s (10th ed.) and Mustill & Boyd (3rd ed.) (both forthcoming).