Pyotr Semyonovich Popov

Pyotr Semyonovich Popov was a colonel in the Soviet military intelligence apparatus (GRU). He was the first GRU officer to offer his services to the Central Intelligence Agency after World War II. Between 1953 and 1958, he provided the United States government with large amounts of information concerning military capabilities and espionage operations. He was codenamed ATTIC for most of his time with the CIA, and his case officer was George Kisevalter.