John Mearsheimer

John Mearsheimer is the R. Wendell Harrison Distinguished Service Professor of Political Science at the University of Chicago, where he has taught since 1982, and one of the leading proponents of offensive realism in international relations theory. He is co-author of The Israel Lobby and U.S. Foreign Policy and author of The Tragedy of Great Power Politics and The Great Delusion: Liberal Dreams and International Realities. He is best known outside academia for arguing that NATO enlargement, not unprovoked aggression, is the root cause of the Ukraine war, a conclusion he reaches through realist theory rather than sympathy for Russia, and he appears frequently on foreign-policy podcasts such as The Peacemonger, hosted by former UK diplomat Ian Proud.