“As the Cold War came to a close, Soviet leaders preferred that U.S. forces remain in Europe and NATO stay intact, an arrangement they thought would keep a reunified Germany pacified. But they and their Russian successors did not want NATO to grow any larger and assumed that Western diplomats understood their concerns.”

American political scientist and international relations scholar

John Joseph Mearsheimer is an American political scientist and scholar of international relations, and a professor at the University of Chicago. He is known for his work on great power politics and the theory of offensive realism. His writing and teaching focus on how states compete for power in an anarchic international system. He has become widely associated with realist thinking in international affairs, especially questions of security, rivalry, and the behavior of major powers.