In this latest episode of In Theory, Disha Karnad Jani interviews Umut Özsu, Professor in the Department of Law and Legalities at Carleton University, about his book Completing Humanity: The International Law of Decolonization, 1960-82 (Cambridge University Press, 2023). The book shows how jurists from the Third World transformed international law during post-1945 decolonization, and traces the legal dimensions of ideas of territorial sovereignty, resource extraction, justice, and freedom.