In association with the International Commission of Jurists

Symposia

07 Aug

[Gaiane Nuridzhanian is an associate professor at The Arctic University of Norway (UiT)] The legal principle of ne bis in idem proclaims that no one shall be tried twice for the same matter. This principle finds expression in a variety of ne bis in idem rules that define the specific parameters of the prohibition on repeat trial. While the ne bis...

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07 Aug

[Nandor Knust is an associate professor of law at the Arctic University of Norway (UiT)] Gaiane Nuridzhanian’s The Principle of Ne Bis in Idem in International Criminal Law offers a comprehensive examination of the ne bis in idem principle in the realm of international criminal law. Drawing from her extensive academic and professional background, Nuridzhanian provides an in-depth analysis of how this...

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06 Aug

It’s that time of the year again! The editorial team at Opinio Juris is pleased to announce the call for papers for our Fifth Annual Symposium on Pop Culture and International Law. We can't believe it's already been five years! We welcome abstracts of up to 400 words on any topic relating to international law and popular culture (film, tv, books, video games, or...

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06 Aug

[Dr Daniel R. Ruhweza is a senior lecturer and head of the Department of Law and Jurisprudence at the Makerere University School of Law] Gaiane Nuridzhanian’s The Principle of ne bis in idem in International Criminal Law examines the common law principle of double jeopardy as established in the Rome statute under Article 20 as a legal principle. This Statute establishes...

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06 Aug

[Dr Iryna Marchuk is an associate professor at the Centre for European, Comparative, and Constitutional Legal Studies (CECS), University of Copenhagen. Dr Aloka Wanigasuriya is an associate professor at the Department of Law, University of Southern Denmark.] Introduction The principle of ne bis in idem holds sacred value in criminal law, as it aims to safeguard the integrity of criminal process by...

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05 Aug

[Megumi Ochi is associate professor at the Graduate School of International Relations, Ritsumeikan University, Kyoto. The Premises of International Criminal Procedure: Identifying the Principles in International Collaboration (Springer, 2024) is the English translation of her second monograph.] I am honoured to be invited to this book symposium on this outstanding monograph written by my friend, Gaiane, on a topic that has...

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05 Aug

[Gaiane Nuridzhanian is an associate professor at The Arctic University of Norway (UiT)] The legal principle of ne bis in idem, also known as double jeopardy, proclaims that no person shall be tried twice for the same matter. This principle exists in most of the domestic legal systems and is a fundamental human right. While the importance of this principle is...

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18 Jul

[Dr Sarah Katharina Stein, LL.M. (Columbia) is a postdoctoral researcher at the Max Planck Institute for the Study of Crime, Security and Law in Freiburg, Germany. She holds a PhD focussing on public international law and PMSCs from Ludwigs-Maximilans-University Munich.] Private Military and Security Companies (PMSCs) have been part of the global security architecture for some while now, however, they still outpace the...

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18 Jul

[Ara Marcén Naval is a Spanish human rights advocate and policy expert with over 20 years of experience working at the intersection of conflict, human rights, corruption, and accountability. She has advised governments, UN agencies, and civil society organisations, and recently contributed to international efforts to regulate private military and security companies.] In today’s wars, power wears a suit and profit pulls...

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18 Jul

[Adrián Agenjo is a Clerk at the Constitutional Court of Spain] The views expressed in this article are the author’s alone and do not represent any institutional affiliation. The increasing presence of Private Military and Security Companies (PMSCs) in modern conflict- zones has prompted critical questions regarding accountability, particularly when personnel from these entities commit international crimes. Who is held responsible for their actions? This article argues...

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17 Jul

[Darío Bürky Arellano holds an MA in International Law from the Geneva Graduate Institute] On 6 May 2025, a new bill was presented to the Verkhovna Rada of Ukraine: the “Draft Law on International Activities of Private Law Legal Entities in the Military and Security Spheres” (“Draft Law on PMSCs”). The proposal was referred to the parliament’s Committee on National Security, Defense, and Intelligence, and...

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17 Jul

[Lindsay Freeman is the director of the Technology, Law & Policy program at the Human Rights Center, UC Berkeley School of Law. She led the drafting of the United Nations’ Berkeley Protocol on Digital Open Source Investigations and developed the OSINT training course for the Institute of International Criminal Investigations. She previously worked for the Office of the Prosecutor of the International Criminal Court and served as a...

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