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July 1, 2021

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Operation Crossroads and the era of high-stakes nuclear proliferation

Seventy-five years ago today, the United States tested an atomic bomb on a tiny island in the Pacific Ocean. It was the world’s fourth atomic explosion – after the first test in New Mexico in August 1945 and then the bombs that were dropped on Hiroshima and Nagasaki. But Operation Crossroads kicked off an era of high-stakes nuclear proliferation and Cold War one-upmanship.

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Page designer: Charles Apple

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