Evidence
Thucydides Trap: rising vs ruling power cases ending in war
Source
Harvard Kennedy School, Belfer Center, Thucydides's Trap project — https://www.belfercenter.org/thucydides-trap/overview-thucydides-trap. Matched to the source page by an automated research pass on 6 Oct 2026; not yet checked by a person..
What it proves
History suggests power transitions usually end in war, though four peaceful cases show conflict is not inevitable.
thucydides trapgraham allisonpower transitiongreat power warrising powerhistorical analogy