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v t e Secret police agencies in the Eastern Bloc
Gulag Iron Curtain Telephone tapping in the Eastern Bloc Berlin Wall Inner German border
Soviet Union	Extraordinary Commission (Cheka) State Political Directorate (GPU) Joint State Political Directorate (OGPU) People's Commissariat for Internal Affairs (NKVD) Main Directorate of State Security (GUGB) People's Commissariat for State Security (NKGB) Ministry of State Security (MGB) Committee for State Security (KGB)
Albania	Directorate of State Security (Sigurimi)
Bulgaria	Committee for State Security (DS)
Czechoslovakia	State Security (StB)
East Germany	Ministry for State Security (Stasi)
Hungary	State Protection Authority (ÁVH) Ministry of Internal Affairs III
Poland	Ministry of Public Security (UB/MBP) Security Service (SB)
Romania	Department of State Security (Securitate)
Yugoslavia	Department of National Security (OZNA) Directorate for State Security (UDBA) Counterintelligence Service (KOS)

Subdivisions	Republics Autonomous Krais Oblasts Autonomous Autonomous okrugs Closed city
Regions	Caspian Sea Caucasus Mountains European Russia North Caucasus Siberia Ural Mountains West Siberian Plain

General	Constitution Elections Foreign relations Brezhnev Doctrine Government List Human rights LGBT Law Leaders Collective leadership Passport system Political parties State ideology Marxism–Leninism Leninism Stalinism
Bodies	Communist Party organisation Central Committee Presidium/Politburo Secretariat Congress General Secretary Congress of Soviets (1922–1936) Supreme Soviet (1938–1991) Congress of People's Deputies (1989–1991) Supreme Court Military Collegium
Offices	Heads of state President Premier Deputy Premier First Deputy Premier
Security services	Cheka GPU NKVD Destruction battalions MVD Militsiya MGB KGB Chairmen Soviet Border Troops Soviet Armed Forces Soviet Army/Spetsnaz GRU • Soviet Navy • Soviet Air Forces/Soviet Airborne Forces
Political repression	Red Terror Collectivization Great Purge Population transfer Gulag List Holodomor Political abuse of psychiatry
Ideological repression	Religion Science Censorship Censorship of images

Crime Demographics Soviet people Working class 1989 census Languages Linguistics
Culture	Ballet Cinema Fashion Literature Music Opera Propaganda Sports Stalinist architecture
Opposition	Soviet dissidents and their groups List
Symbols	Anthem Republics Emblem Republics Flag Republics Hammer and sickle