Career Ambassador of the Argentine Foreign Service

The Legal Adviser to the Argentine Foreign Ministry

Currently also a Member of the Permanent Court of Arbitration,

the Committee on the Election of the Prosecutor of the

International Criminal Court, the International Humanitarian

Fact-Finding Commission established by Additional Protocol I

to the 1949 Geneva Conventions, the Panel of Arbitrators and

Conciliators of the International Center for Settlement of

Investment Disputes (ICSID), Arbitrator and Conciliator nominated

under Art. 2 of Annexes V and VII of the United Nations Convention

on the Law of the Sea, Argentine Commissioner to the

International Whaling Commission


Joined the Foreign Service in 1997. Deputy Consul in New York (1998-2005).

Minister Plenipotentiary at the Permanent Mission of Argentina to the

United Nations: Vice-President of the UN General Assembly Special Committee

on Peacekeeping Operations (2011-12), Deputy Permanent Representative

of Argentina before the UN Security Council (2013-2014), Vice-President of the

UN High-Level Committee on South-South Cooperation (2015),

coordinated negotiations of UN General Assembly Resolution 69/319 on

“Basic Principles on Sovereign Debt Restructuring Processes” (2015)


Agent of the Argentine Republic before the International Court of Justice in the Advisory Opinion on "The Legal Consequences of the Separation of the Chagos Archipelago from Mauritius in 1965" (2018-2019). Legal Counsel of Argentina before the International Court of Justice in the "Case concerning Pulp Mills on the River Uruguay" (2007-2010),  and before the International Tribunal for the Law of the Sea in the Advisory Opinion on the "Responsibilities and obligations of States sponsoring Persons and Entities with respect to Activities in the International Seabed Area" (2010)


Former Delegate of Argentina to the International Maritime Organization, the International Seabed Authority, UNCITRAL, UNIDROIT, the Hague Conference on Private International Law and the Inter-American Conference on Private International Law (CIVIP VII)


Law degree from the National University of La Plata (1991), LLM from Harvard Law School (2006). Adjunct Professor at the University of La Plata (since 1995). Invited to lecture at the Hague Academy of International Law (January 2020)

Author/editor of 4 books and more than 40 scholarly articles on International Law


Areas of interest

Conflict of Laws

International Law

International Human Rights Law

Photo: Dan Hallman