Klaus Fuchs

See also Wikipedia's article about "Klaus Fuchs".

Klaus Fuchs (1911-1988) was a German-born British physicist who, among other things, worked on the Manhattan Project. He was also a Soviet spy. He transferred from Edinburgh to Columbia University in late 1943, and worked in New York City until August 1944, when he moved onto the Theoretical Physics Division in Los Alamos, New Mexico.

Fuchs was a brilliant scientist. One of his most important achievements was co-patenting the implosion triggering mechanism in the fission bomb. He was also present for the Trinity test.

He provided much crucial information to the USSR. For instance, he revealed how much uranium the United States had managed to produce, which made it easy for the USSR to calculate how many bombs the US possessed, and thus revealed the United States' threats of nuclear destruction to be empty bluffs. Hence, his information provided allowed the Soviet Union to be politically aggressive in the postwar era.