None whatsoever, the Manhattan Project was a closely guarded secret.

The Rosenbergs were involved in the Manhattan Project which designed and made the first atomic bomb. They spied for the Soviet Union and passed the information to the Soviet Union on how to make an atomic bomb. They were caught and were executed for spying.

With the breakup of the Soviet Union, the great value of their spying to the Soviet Atomic Bomb program was revealed.

The Manhattan Project.

the first atomic bomb.....................

about the time the manhattan project began in 1942, long before any existed.