Tullio Treves


Treves Tullio

Pre-eminent public international law expert and senior arbitration counsel Tullio Treves has represented governments in numerous international maritime and investment disputes and is a former Law of the Sea Tribunal’s Judge and arbitrator in state-to-state disputes.

State-to-State Disputes: International Court of Justice and Inter-State Arbitrations

Mr. Treves has acted before the International Court of Justice (ICJ) as Counsel for Finland in the Great Belt case, for Peru in the maritime dispute with Chile and for the United Arab Emirates in a pending case against Qatar. He has acted as counsel for France in the arbitration with Canada on the delimitation of maritime zones in the area of Saint-Pierre-et-Miquelon, and for the Russian Federation in two law of the sea arbitrations against Ukraine.

He has sat as arbitrator in the tribunal in the Bangledesh v. India case, as president of the arbitration tribunal in a case between Timor Leste and Australia and as arbitrator in the pending law of the sea case between Malta, Sao Tomé and Principe.

Mr. Treves has experience as a consultant to various governments and international organizations and as chairman of an arbitration tribunal at the Cairo Regional Centre for International Commercial Arbitration.

Law of the Sea

Mr. Treves was a Judge of the International Tribunal for the Law of the Sea from 1996 to 2011. He has later twice sat in the Tribunal as an ad hoc judge chosen by Panama in the Virginius case, and by Italy in the Norstar case.

Within the Tribunal, he was the President of the Seabed Disputes Chamber and involved in the 2011 delivery proceedings of an advisory opinion upon the request of the Council of the International Seabed Authority. He also chaired the Tribunal’s Committee of the Whole for the drafting of the Rules of the Tribunal.

Investment Disputes

Mr. Treves has been part of the Curtis defense teams of Venezuela, Tanzania and Kazakhstan in investment arbitrations, dealing mostly with questions of jurisdiction.

Academic and Diplomatic Experience

Mr. Treves is a Professor ì Emeritus of international law at the State University of Milano after being full professor in the same University for more than thirty years. He has lectured in universities and other learning institutions in all continents.

Between 1984 and 1992, he was the legal adviser to the Permanent Mission of Italy at the United Nations in New York. In this capacity, he chaired various working groups of the Sixth Committee and was a member of the Italian delegation to the Security Council.

Mr. Treves is the author of numerous books and articles on many aspects of public and private international law.