Marcelo Kohen


Marcelo Gustavo Kohen is an Argentine international lawyer and academic specialised in the areas of international legal theory, territorial and border disputes, international adjudication, and peaceful settlement of international disputes. He is Professor of International Law at the Graduate Institute of International and Development Studies in Geneva.
Kohen is the Secretary-General of the Institut de Droit International, the oldest organisation of international lawyers and winner of the Nobel Peace Prize. He was the first non-European appointed as Secretary-General since the Institut's foundation in 1870.
He has worked as legal counsel and advocate for several states before the International Court of Justice and the International Tribunal for the Law of the Sea. He has been an arbitrator designated by states in at least fourteen international cases, including at the International Centre for Settlement of Investment Disputes and UNCITRAL.

Education

Kohen obtained his law degree from the National University of Rosario in 1983. He obtained the academy diploma from The Hague Academy of International Law in 1990. He obtained his PhD in International Law from the University of Geneva in 1995, under the supervision of the Egyptian jurist and international judge Georges Abi-Saab.

Career

Kohen has been Professor of International Law at the Graduate Institute of International and Development Studies in Geneva since 2002, and a faculty member since 1995. He has twice given courses at The Hague Academy of International Law. He began his academic career in 1986, when, soon after graduating, he became a faculty member at the National University of Rosario.
Kohen has been twice elected Secretary General of the Institut de Droit International. Kohen is also the founder of the Latin American Society of International Law and was appointed as its first Director General. Kohen has also served as Rapporteur for the International Law Association, the Council of Europe, as well as the Institut.
He has represented different states on at least twelve occasions before the ICJ, including Argentina in the Uruguay River pulp mill dispute and the Legal Consequences of the Separation of the Chagos Archipelago from Mauritius in 1965; Colombia in the Case concerning The Territorial and Maritime Dispute ; Costa Rica in the Costa Rica–Nicaragua [San Juan River border dispute#2009 International Court of Justice case|Dispute regarding Navigational and Related Rights (Costa Rica v. Nicaragua)]; and Serbia in the Advisory opinion on Kosovo's declaration of independence. He has also represented states at other international tribunals, including the International Tribunal for the Law of the Sea, where he represented Argentina in the “ARA Libertad” Case. He has been an arbitrator designated by states from four continents and very different traditions and regimes in at least 14 international cases, including at the International Centre for Settlement of Investment Disputes and UNCITRAL.
Kohen is often cited in English, French, and Spanish-language news media for his expertise on matters of statehood, secession, and peaceful settlement of international disputes.
He is the author of several publications in English, French, and Spanish. His book "Possession contestée et souveraineté territoriale" was awarded the Paul Guggenheim Prize in 1997.

Secretary-General of the Institut de Droit International

Marcelo Kohen was elected Secretary General of the Institute of International Law in 2015, at the 77th session held in Tallinn. He was re-elected as Secretary General in 2021.
Kohen represented the Institute at the World Summit of Nobel Peace Laureates 2019 in Mérida, Mexico. In this context, he argued that "the law is the weapon of the weak in their relationship with the powerful" and stressed that "force does not give rights."

Selected publications

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Selected lectures

Professor Marcelo Kohen is one of the largest contributors to the United Nations lecture series, that offers a "collection of lectures on virtually every subject of international law" given by the most prominent international law scholars and practitioners around the world. He has given four lectures, one mini-series, and features in two online panels. These include:
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