The Soviet A-Bomb 1949

• Stalin made the creation of an Atom bomb a top priority

• Many German scientists had been arrested and were made to help the Soviets

• Klaus Fuchs was a British Scientist working on the Manhattan project.

• He was sympathetic to Communism and passed on lots of details to the Soviets.

• Joe-1 was exploded years before the Americans expected them to have made one.

• It helped lead to the McCarthy hysteria.