Roosevelt-Churchill “Tube Alloys” Deal

September 19, 1944

The Roosevelt-Churchill “Tube Alloys” deal states:

“The suggestion that the world should be informed regarding tube alloys, with a view to an international agreement regarding its control and use, is not accepted. The matter should continue to be regarded as of the utmost secrecy. Still, when a “bomb” is finally available, it might perhaps, after mature consideration, be used against the Japanese, who should be warned that this bombardment will be repeated until they surrender.

Full collaboration between the United States and the British Government in developing tube alloys for military and commercial purposes should continue after the defeat of Japan unless and until terminated by joint agreement.

Inquiries should be made regarding the activities of Professor Bohr and the steps taken to ensure that he is responsible for no information leakage, particularly to the Russians.”