Twelve nations signed the Antarctic Treaty
On this day · 1 December 1959
At the height of the Cold War, twelve rival countries agreed to keep a whole continent for science and peace.
On December 1, 1959, in Washington, D.C., twelve nations signed the Antarctic Treaty, agreeing to keep an entire continent demilitarized. The signatories were the countries whose scientists had worked in Antarctica during the International Geophysical Year of 1957–58 — among them the United States and the Soviet Union, then locked in the Cold War.
The treaty set the continent aside for peaceful scientific use. It banned military bases, weapons testing, and — pointedly — nuclear explosions and waste disposal, while guaranteeing freedom of scientific investigation.
It was the first arms-control agreement of the Cold War.
Crucially, the treaty froze all territorial claims rather than settling them: existing claims were neither recognized nor renounced. It entered into force in 1961 and has since grown to dozens of parties, making Antarctica a rare place governed by cooperation rather than conquest.
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