Use of Force

[Jeroen van den Boogaard is a legal counsel for the Dutch Ministry of Foreign Affairs and a lecturer in international humanitarian law at the University of Amsterdam. He writes this post in his personal capacity. This is the seventh and final piece in a series of analyses on aspects of the recent adoption of the 2024-2026 CCW GGE LAWS report.] In...

[Jessica Dorsey is an Assistant Professor of International Law at Utrecht University School of Law and Managing Editor of Opinio Juris. This post is the sixth in a series of analyses on aspects of the recent adoption of the 2024-2026 CCW GGE LAWS report.] Introduction This post traces the trajectory of the concepts of responsibility and accountability across successive iterations of the GGE's Rolling...

[Sally Longworth is a Senior Lecturer in Public International Law at Stockholm University and Researcher in public international law at the Swedish Defence Research Agency (FOI). The views expressed in this post are her own and do not reflect the position or understanding of Sweden. This post is the third in a series of analyses on aspects of the recent...

[Jessica Dorsey is an Assistant Professor of International Law at Utrecht University School of Law and Managing Editor of Opinio Juris. Rain Liivoja is a Professor at the University of Queensland Law School, and a Director of the Asia-Pacific Institute for Law and Security. Netta Goussac is an Associate Senior Researcher at the Stockholm International Peace Research Institute and Associate Partner at...

[Arez Rizgari is an Iranian scholar. The author is writing under a pseudonym because they are concerned that this post will subject them to political retaliation or restrictions on their academic freedom by Iranian authorities.] The Islamic Revolutionary Guard Corps (IRGC) has repeatedly targeted Rojhilat (Iranian Kurdistan) parties based in the Kurdistan Region of Iraq (KRI) with missile and drone strikes...

[Jessica Dorsey is an Assistant Professor of International Law at Utrecht University School of Law and Managing Editor of Opinio Juris.]The UN Independent International Fact-Finding Mission on the Islamic Republic of Iran (FFMI) released its 18-page report to the Human Rights Council on 17 September 2026. In the report, among other findings, the Mission outlines reasonable grounds to believe that the United...

[Amir Abbas Kiani is a collaborating researcher in International Law at Shiraz University, Iran.] On June 17, 2026, the Islamic Republic of Iran and the United States of America (U.S.) signed an agreement, formally entitled the ‘Islamabad Memorandum of Understanding’ (MoU), to resolve certain disputes arising from the international armed conflict (IAC) that broke out between them on February 28, 2026,...

[Dorothea Anthony is a Senior Lecturer in the School of Law at the University of Wollongong, Australia.] When the United States and Israel initiated military action against Iran in June 2025 and February 2026, one response from Iran was to target US foreign military bases. It struck these bases situated in the neighbouring United Arab Emirates, Qatar, Bahrain, Saudi Arabia, Kuwait,...