Ezequiel Heffes is an expert in international law, with experiences at UNICEF, Geneva Call, and the ICRC. He holds a PhD (University of Leiden), an LLM (Geneva Academy), and a law degree (University of Buenos Aires School of Law). He is the author of Detention by Non-State Armed Groups under International Law (CUP, 2022), the co-editor of International Humanitarian Law and Non-State Actors. Debates, Law and Practice (Springer/Asser Press, 2020), and of Armed Groups and International Law. In the Shadowland of Legality and Illegality (Edward Elgar, 2023).Nathalie Weizmann is an expert in international humanitarian law. She has served at the UN Office for the Coordination of Humanitarian Affairs, focusing principally on international law as it relates to the protection of civilians and humanitarian activities. She has also served as Senior Director at Columbia Law School's Human Rights Institute, and as a legal adviser at the ICRC, addressing issues ranging from detention to responsible arms transfers. Nathalie holds degrees from McGill University and the Geneva Graduate Institute.

02/02/2026

Ezequiel Heffes is an expert in international law, with experiences at UNICEF, Geneva Call, and the ICRC. He holds a PhD (University of Leiden), an LLM (Geneva Academy), and a law degree (University of Buenos Aires School of Law). He is the author of Detention by Non-State Armed Groups under International Law (CUP, 2022), the co-editor of International Humanitarian Law and Non-State Actors. Debates, Law and Practice (Springer/Asser Press, 2020), and of Armed Groups and International Law. In the Shadowland of Legality and Illegality (Edward Elgar, 2023).Nathalie Weizmann is an expert in international humanitarian law. She has served at the UN Office for the Coordination of Humanitarian Affairs, focusing principally on international law as it relates to the protection of civilians and humanitarian activities. She has also served as Senior Director at Columbia Law School's Human Rights Institute, and as a legal adviser at the ICRC, addressing issues ranging from detention to responsible arms transfers. Nathalie holds degrees from McGill University and the Geneva Graduate Institute.

02/02/2026

Ezequiel Heffes is an expert in international law, with experiences at UNICEF, Geneva Call, and the ICRC. He holds a PhD (University of Leiden), an LLM (Geneva Academy), and a law degree (University of Buenos Aires School of Law). He is the author of Detention by Non-State Armed Groups under International Law (CUP, 2022), the co-editor of International Humanitarian Law and Non-State Actors. Debates, Law and Practice (Springer/Asser Press, 2020), and of Armed Groups and International Law. In the Shadowland of Legality and Illegality (Edward Elgar, 2023).Nathalie Weizmann is an expert in international humanitarian law. She has served at the UN Office for the Coordination of Humanitarian Affairs, focusing principally on international law as it relates to the protection of civilians and humanitarian activities. She has also served as Senior Director at Columbia Law School's Human Rights Institute, and as a legal adviser at the ICRC, addressing issues ranging from detention to responsible arms transfers. Nathalie holds degrees from McGill University and the Geneva Graduate Institute.

02/02/2026