Tom Dannenbaum is assistant professor of international law. Prior to joining Fletcher in 2017, he was lecturer in human rights at University College London and visiting lecturer in law and Robina Foundation visiting human rights fellow at Yale Law School. Tom writes on international law, focusing primarily on the laws of war, the law on the use of force, international criminal law, shared responsibility, and international judging. He has also written on peace negotiations, terrorist strategy, reparations, and the philosophical basis for punishing atrocity crimes perpetrated via the state.

His work has been published in a range of leading journals, including the Yale Law Journal, the European Journal of International Law, International & Comparative Law Quarterly, International Law Studies, the Harvard International Law Journal, and Security Studies. His book, The Crime of Aggression, Humanity, and the Soldier, was published by Cambridge University Press in 2018. His article, "Why Have We Criminalized Aggressive War?", was awarded the Lieber Prize by the American Society of International Law in 2017. His work on accountability for peacekeeper abuses has been cited by the International Law Commission and the Hague Court of Appeals in the Netherlands.