The Cold War: A Complete Timeline
The Cold War never became a direct war between its two principals, and that was the whole point. For more than four decades after 1945, the United States and the Soviet Union competed for the world without firing on each other directly — through alliances, proxy wars, espionage, propaganda, a space race, and an arms buildup that put humanity minutes from annihilation. The contest shaped American foreign policy, science, and politics more than any event since World War II.
This timeline runs from the war's origins in the rubble of 1945 through the confrontations, the détente, and the final decade. Each entry links to a full account. The through-line is containment — the American strategy of holding communism in place wherever it pushed — and the enormous costs and close calls that strategy carried.
Start here for the whole standoff - four decades of rivalry compressed into one account. The sections that follow break it into its phases.
The Cold War grew out of the victory that ended the last one. As the wartime alliance dissolved, the United States and the Soviet Union divided Europe between them, and the American strategy of containing Soviet power took shape in these first tense years.
The rivalry turned dangerous. These were the years of hot proxy wars and direct standoffs - the period that carried the world closer to nuclear war than it had ever been, or has been since.
The competition reached beyond the earth. Rockets that could launch satellites could also deliver warheads, and the race to orbit and the Moon was a contest of prestige and technology with the arms race always underneath it.
Containment met its limits in Southeast Asia even as the superpowers began, cautiously, to talk. These entries cover the war that divided America and the uneasy thaw that ran alongside it.
The long standoff ended faster than almost anyone predicted. A renewed arms buildup met a Soviet system that could no longer keep pace, and within a few years the rivalry - and the Soviet Union itself - was over.
The Cold War's hot wars get fuller treatment in the guide to every U.S. war and major conflict, and its presidents in U.S. presidents in order.