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The Crime of War: from the Nuremberg trial to Ukraine
October 7, 2025 @ 6:30 pm - 8:00 pm
Eighty years on from the start of the Nuremberg War Crime Trial in November 1945 we ask what is the future of the crime of aggression after the creation of the ICC in 1998 and the Ukraine war?
At this event, Claus Kress, a leading German academic, judge and currently Special Adviser to the Prosecutor of the International Criminal Court on the Crime of Aggression, will be in conversation with Gerry Simpson, a legal adviser at the ICC negotiations in Rome and at the UN and a professor of international law here at LSE. They will discuss the prospects for international law and the crime of aggression after Ukraine and in the light of the historic first international trials of war criminals at Nuremberg.
Speaker: Claus Kress is a professor of international law and criminal law. He holds the Chair for German and International Criminal Law and he is the Director of the Institute of International Peace and Security Law at the University of Cologne. In 2019, he was appointed Judge ad hoc at the International Court of Justice in the Case of the Application of the Convention on the Prevention and Punishment of the Crime of Genocide (The Gambia v. Myanmar). Since 2021, he has been serving as the Special Adviser to the Prosecutor of the International Criminal Court on the Crime of Aggression.
Chair: Gerry Simpson holds a Chair in Public International Law at LSE. He is the author of Great Powers and Outlaw States and Law, War and Crime: War Crimes Trials and the Reinvention of International Law. His most recent book is The Sentimental Life of International Law. Gerry is now writing a book on the Cold War and a meditation on nuclearism entitled: The Atomics: My Nuclear Family at the End of the Earth. Gerry is a Fellow of the British Academy.
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