The Thucydides Trap

The Thucydides Trap describes the historical tendency toward war when a rapidly rising power threatens to displace an established ruling power. The term is based on a famous observation by the ancient Greek historian Thucydides about the Peloponnesian War (431–404 BCE): "It was the rise of Athens and the fear that this instilled in Sparta that made war inevitable." The Peloponnesian War, fought between the Athenian Empire and the Spartan-led Peloponnesian League, devastated the Greek world and ended with the defeat of Athens and the establishment of Spartan hegemony.

The concept serves as a framework for analyzing modern geopolitical friction between the United States and China.

Sparta, (the U.S.) reacts with anxiety to the rapid growth of the rising challenge of Athens (China), creating a spiral of structural tension that leads to war 75% of the time.