LONDON - A secret US initiative to build the world's first nuclear weapons was heavily infiltrated by Soviet spies from its outset, papers released by Britain's Public Record Office have shown.
The bungling exploits of a certain spy code named Bond who filed British military secrets to Russia during the second World War, also came to light. The papers showed that successful spying missions helped the Soviet regime make up valuable lost ground in the nuclear race.
Leading scientists, including Cambridge university physicists Klaus Fuchs and Theodore Hall, passed on details of the Manhattan Project to Moscow. In 1945, the Soviets praised the information supplied by Fuchs as being of "great value".