Hiroshima & Nagasaki:  1945
Source:  https://www.atomicheritage.org/print/key-documents/truman-statement-hiroshima

Truman Statement on Hiroshima

President Harry Truman [1] issued this statement after the first atomic bomb was dropped on Hiroshima [2]. His statement unveiled the top secret Manhattan Project and portrays it as an immense success in the history of science and warfare. President Truman envisions the production and use of atomic energy for power within the United States and as a force for maintaining world peace.

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