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Professor Christian J Tams

Director of the GCILS (working remotely, please contact me by email)

* working remotely, please contact me by email

Christian J. Tams is Professor of International Law at the University of Glasgow and GCILS’ founding director. He directs the Erasmus Mundus Master in International Law of Global Security, Peace and Development (ILGSPD) and the Glasgow-Leuphana dual degree programme in international economic law.

Christian is an expert in public international law, with special expertise in the law of treaties, State responsibility, dispute settlement and investment law. He studied law at the universities of Kiel, Lyon III, and Cambridge (LLM, 2000; PhD, 2004), and is a qualified German lawyer (admitted in 2005). Before joining the School of Law he was an assistant professor at the Walther Schücking Institute of International Law at the University of Kiel.

Christian sits on the Board of the European Society of International Law and of the Council of the German Society of International Law. He is the review editor of the European Journal of International Law and one of the editors of the European Yearbook if International Economic Law.

Over the past years, Christian has held visiting positions at universities in France, China, Japan, and Austria; in 2018, he directed the Centre of Research and Studies at The Hague Academy of International Law.

An academic member of Matrix Chambers London, Christian regularly advises States, individuals and companies in international disputes. In recent years, he has acted in proceedings before the International Court of Justice, the Iran-US Claims Tribunal and arbitral tribunals

Publications

The Development of International Law by the International Court of Justice

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This book traces the impact that the International Court of Justice (ICJ), the principal judicial organ of the United Nations, has had on various areas of international law. A number of prominent international experts examine whether, and to what extent, international law has been shaped by the Court's jurisprudence. The informal development of international law through the Court's judgments contrasts with the development of international law through more deliberate means, such as treaty-making. Assessing key areas of international law over which the ICJ has exercised its jurisdiction, such as international environmental law, international human rights, the law of the sea, and the law of immunities, this book comprehensively details the impact of international jurisprudence on contemporary international law. It makes required reading for anyone studying the ways in which international courts have in shaping the evolution of international law.

James Sloan

Enforcing Obligations Erga Omnes in International Law

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The concept of obligations erga omnes - obligations to the international community as a whole - has fascinated international lawyers for decades, yet its precise implications remain unclear. This book assesses how this concept affects the enforcement of international law. It shows that all States are entitled to invoke obligations erga omnes in proceedings before the International Court of Justice, and to take countermeasures in response to serious erga omnes breaches. In addition, it suggests ways of identifying obligations that qualify as erga omnes. In order to sustain these results, the book conducts a thorough examination of international practice and jurisprudence as well as the recent work of the UN International Law Commission in the field of State responsibility. By so doing, it demonstrates that the erga omnes concept is solidly grounded in modern international law, and clarifies one of the central aspects of the international regime of law enforcement. The dissertation, upon which this book is based, was awarded the 2005 Yorke Prize of the Faculty of Law of the University of Cambridge.