Katharine Fortin is an Associate Professor at Utrecht University where she teaches IHL and IHRL. Before joining Utrecht University, she worked at the ICTY, ICC and Norton Rose Fulbright. She is the author of The Accountability of Armed Groups under Human Rights Law (Oxford University Press, 2017) which won the 2018 Lieber Prize. She has written widely about the framework of law that applies to armed groups in non-international armed conflicts and is one of the editors of the Armed Groups and International Law blog.