CONCEPT
Thucydides Trap
The structural danger that arises when a rising power threatens to displace an established one: not hostility or malice but the logic of mutual fear that draws states toward conflict no individual actor chose and none can easily exit.
Thucydides identified the truest cause of the Peloponnesian War not in the specific grievances both sides cited—the quarrels over Corcyra and Potidaea—but in something structural: the growth of Athenian power and the fear which this caused in Sparta. The concept was given a name in our time by the political scientist Graham Allison, who counted sixteen cases in the past five centuries in which a rising power confronted an established one and found that twelve of those cases ended in war. The phrase “Thucydides Trap” has since migrated almost word for word into discussions of
artificial intelligence: the AI arms race between the United States and China, and between rival laboratories convinced that whoever reaches advanced capability first will set the terms for everyone else, exhibits precisely the structural logic Thucydides isolated. The technology is new. The structure is not. A capability that confers decisive advantage, held by one actor, viewed with fear by another, generates