Use of Force

[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...

[Dr Eitan Diamond serves as Manager and Senior Legal Expert at the Diakonia IHL Centre in Jerusalem. Dr Ellen Nohle serves as a Senior Legal Advisor and Legal Team Coordinator at the Diakonia IHL Centre in Jerusalem.   Anna-Christina Schmidl serves as a Legal Advisor at the Diakonia IHL Centre in Jerusalem.] Introduction Between 7 October 2023, when hostilities broke out in Israel and Gaza,...

The inimitable Sam Moyn and I have a chapter on the Vietnam War and international law in the Cambridge History of the Vietnam War: Volume 3, Endings and Aftermaths, which was just published by Cambridge University Press. Here are the opening paragraphs: There have been thousands of histories of the Vietnam War, but none assigns a pivotal role to international law....

[Dr Anna Nadibaidze is a researcher for the European Research Council funded AutoNorms and AutoPractices projects based at the Center for War Studies, University of Southern Denmark] The United Nations Summit of the Future, held in New York in September 2024, resulted in the adoption of the Pact for the Future. Among many other issues, this pact lists as an action...

[Dr Erin Pobjie is Assistant Professor at Essex Law School and a Senior Research Affiliate at the Max Planck Institute for Comparative Public Law and International Law. She serves as co-Rapporteur of the International Law Association’s Committee on the Use of Force.] The author writes here in her personal capacity. Amidst the shadows cast by current global events, there is solace in...

[Alejandro Chehtman is Dean and Professor of Law at Universidad Torcuato Di Tella.] Prohibited Force (CUP, 2024) addresses a neglected issue in International Law, namely, the scope of the prohibition to use force. That this is a neglected issue might seem unexpected, given that this rule has been appropriately termed a “cardinal principle”, and one of the “cornerstones” of the international...

[James A. Green is Professor of Public International Law at the University of the West of England, Bristol, UK ,co-rapporteur of the International Law Association’s Use of Force Committee and a former editor-in-chief of the Journal on the Use of Force and International Law. His most recent book is Collective Self-Defence in International Law (CUP, 2024).] Pål Wrange once wrote that...

[Andrew Clapham is Professor of International Law at the Geneva Graduate Institute and the author of "War"] During Dr Pobjie’s book launch at the Geneva Academy we discussed some of the contemporary challenges facing those working to ensure respect for the international law on prohibited force. It is obvious that states are not willing to take the necessary steps to deal...

[Tomohiro Mikanagi is an Ambassador/Deputy-Permanent Representative of the Japanese Permanent Mission to the UN and Ambassador-at-Large for Cooperation on International Law. He is a Former Legal Advisor of the Japanese Ministry of Foreign Affairs and former visiting fellow of the Lauterpacht Centre for International Law, Cambridge.] The following comments are made in the author’s personal capacity According to Erin Pobjie, “a ’use of...

[Adil Ahmad Haque is a Professor of Law and Judge Jon O. Newman Scholar at Rutgers Law School. His first book, Law and Morality at War, was recently published by Oxford University Press.] Erin Pobjie’s Prohibited Force is an extraordinary book. Its combination of theoretical sophistication and empirical rigor is both striking and rare. While some readers may be tempted to skip to the later chapters, which set...