In February 2022, Russian tanks rolled across the Ukrainian border despite decades of international law, treaties, and diplomatic assurances. In 2024, the United States...
Balance-of-power theory emerged from centuries of European statecraft, crystallized by thinkers like Hans Morgenthau and Kenneth Waltz into a core principle of international relations: states naturally seek to prevent any single power from achieving hegemony. The theory posits that when one state grows too powerful, others will form coalitions to contain it, creating a self-regulating system that preserves sovereignty and prevents domination.