The Franck Report of June 1945 was a document signed by several prominent nuclear physicists recommending that the United States not use the atomic bomb as a weapon to prompt the surrender of Japan in World War II.
The committee was appointed by Arthur Compton and met in secret, in all-night sessions in a highly secure environment.
[1] Largely written by Eugene Rabinowitch,[1] the report spoke about the impossibility to keep the United States atomic discoveries secret indefinitely.
This prediction turned out to be accurate, as the nuclear arms race and the concept of mutual assured destruction became a major factor in the Cold War.
In the latter case, the United States would gain several years time to further develop their nuclear armament before other countries would start their own production.