Soviet intelligence agencies

The Committee for State Security (, ), abbreviated as KGB (, ; ) was the main security agency of the Soviet Union from 1954 to 1991. It was the direct successor of preceding Soviet secret police agencies including the Cheka, OGPU, and NKVD. Attached to the Council of Ministers, it was the chief government agency of "union-republican jurisdiction", carrying out internal security, foreign intelligence, counter-intelligence and secret police functions. Similar agencies operated in each of the republics of the Soviet Union aside from the Russian SFSR, where the KGB was headquartered, with many ass

The '''People's Commissariat for Internal Affairs (, ), abbreviated as NKVD''' (; ), was the interior ministry and secret police of the Soviet Union from 1934 to 1946. The agency was formed to succeed the Joint State Political Directorate (OGPU) secret police organization, and thus had a monopoly on intelligence and state security functions. The NKVD is known for carrying out political repression and the Great Purge under Joseph Stalin, as well as counterintelligence and other operations on the Eastern Front of World War II. The head of the NKVD was Genrikh Yagoda from 1934 to 1936, Nikolai Ye

The All-Russian Extraordinary Commission, abbreviated as VChK (), and commonly known as the Cheka (), was the first Soviet secret police organization. It was established on by the Council of People's Commissars of the Russian SFSR, and was led by Felix Dzerzhinsky. By the end of the Russian Civil War in 1922, the Cheka had at least 200,000 personnel.

Soviet national security agency (1922-1923)

Soviet national security agency (1923-1934)

Soviet state security apparatus, secret police and security service

term for the actions of political warfare conducted by the Soviet and Russian security services

Soviet national security agency (1934-1943)

Foreign military intelligence agency of the Soviet Army (1918-1992)

Soviet secret police, intelligence and counter-intelligence force (1941 and 1943)

trade organization of the Soviet Union in the United States

secret research facility

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