Klaus Fuchs

Fuchs, Klaus (1911–88), German-born physicist and convicted spy. During World War II, Fuchs—a British citizen and Soviet agent—worked on the top-secret, atomic bomb project in the United States (1943–45). He supplied the Russians with designs for the uranium and plutonium bombs. Released from a British prison in 1959, he returned to East Germany, where he directed the Institute for Nuclear Physics (1959–79).

See also: Espionage; Manhattan Project.