Declassified records reveal that Soviet spying on the U.S. atomic bomb effort advanced Moscow’s bomb program, but Oppenheimer was no spy. Oppenheimer joined the Manhattan Project, a nationwide ...

"SPIES: The Epic Intelligence War Between ... of the US development of the atomic bomb through the secretive Manhattan Project before Harry Truman learned about it. On the other hand, the ...

The cables revealed the identities of numerous Americans who were spies for the Soviet Union ... such as "Enormous," which stood for the Manhattan Project, America's atomic-bomb program.