3 September 2022

International Relations Theory Suggests Great-Power War Is Coming

Matthew Kroenig

This week, thousands of university students around the world will begin their introduction to international relations courses for the first time. If their professors are attuned to the ways the world has changed in recent years, they will be teaching them that the major theories of international relations warn that great-power conflict is coming.

For decades, international relations theory provided reasons for optimism—that the major powers could enjoy mostly cooperative relations and resolve their differences short of armed conflict.

Realist IR theories focus on power, and for decades, they maintained that the bipolar world of the Cold War and the unipolar post-Cold War world dominated by the United States were relatively simple systems not prone to wars of miscalculation. They also held that nuclear weapons raised the cost of conflict and made war among the major powers unthinkable.

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