Regions

[Luciano Pezzano is Professor of Human Rights at the University of Business and Social Sciences (UCES, Argentina) and Lecturer of Public International Law at the National University of Cordoba (UNC, Argentina)] On 5 March 2025, the Republic of Sudan instituted proceedings before the International Court of Justice (ICJ) against the United Arab Emirates (UAE), for breaches of the Genocide Convention. The...

[Frédéric Mégret is the Hans & Tamar Oppenheimer Chair in Public International Law at the Faculty of Law, McGill University and the James S. Carpentier Visiting Professor at Columbia Law School] The question of how Mexico and Canada police their borders has emerged as a considerable symbolic stake in the current crisis with the US. The US President has made a number of...

When the news broke that the former Philippines President Rodrigo Duterte had been arrested and detained upon arrival at Manila’s airport from an overseas trip, by Philippine police executing an international arrest warrant, it was the culmination of months of speculation. The political feud and infighting in the Philippines halls of power certainly facilitated this moment. But let us not forget, it’s been the relentless work...

[Benjamin Thorne is a Lecturer (Assistant Professor) in Criminal Law at the University of Reading] Almost 3 weeks into Donald Trump’s second term as US President and one could have been forgiven for becoming somewhat numb to the seemingly never ending conveyor belt of Executive Orders (EO) being announced. However, one particular EO jolted many from their numbness, not because it...

[Jens Iverson is an Assistant Professor at Leiden University and a Visiting Professor/Lecturer at Vermont Law School, Santa Clara University School of Law, and University of California College of the Law, San Francisco] A previous post on Opinio Juris, Threats of Force and Attribution: The Case of Incoming Heads of State, casts doubt on the legal seriousness of Trump’s statements before...

[Mark Klamberg is professor of international law at Stockholm University and currently resides in Washington, DC, where he is affiliated with American University WCL and the Atlantic Council’s Strategic Litigation Project. Alexandra Lily Kather provides expert legal advice to a range of accountability actors, including the Strategic Litigation Project at the Atlantic Council, on violations of international criminal law with a...

[Mark Klamberg is professor of international law at Stockholm University and currently resides in Washington, DC, where he is affiliated with American University WCL and the Atlantic Council’s Strategic Litigation Project. Alexandra Lily Kather provides expert legal advice to a range of accountability actors, including the Strategic Litigation Project at the Atlantic Council, on violations of international criminal law with a...

[Marc Weller is Professor of International Law and International Constitutional Studies in the University of Cambridge] The Cambridge Initiative on Peace Settlements, in cooperation with Opinio Juris, offered a proposal for ending the war in Ukraine as soon as the conflict broke out, along with detailed contributions on individual aspects of a possible settlement from our international team of experts. This...

[Carolina Trejos (LLM in Public International Law) is a consultant at the Special Jurisdiction of Peace, on macro-case 07 regarding child recruitment. She was a legal fellow at the Center for Reproductive Rights and interned at Women’s Link Worldwide and the Inter-America Commission of Human Rights.] Introduction On February 2023, the Special Jurisdiction of Peace (JEP), the transitional justice tribunal in Colombia,...

[Emma Charlene Lubaale is a Ugandan Senior Lecturer in Law at the University of Greenwich in London, and a non-resident Research Professor at Rhodes University’s Faculty of Law in South Africa. Some of her recent publications focus on National accountability for international crimes in Africa and the intersection of gender and criminal justice in Africa.] Introduction  Thomas Kwoyelo was a mid-level commander...