Soviet Union Советский Союз CALENDAR: Julian/Gregorian (to 14 Feb 1918); Gregorian (from 14 Feb 1918); MAIN RECORD: languages used: Russian; scripts: Russian - original (others used earlier are replaced with current); TRANSLITERATION: Russian (in parentheses); OTHER: n/a Sources Notes Polity Style: 1922-1991 Heads of State: 1922-1991 Heads of Government: 1923-1991 Communist Party Leadership: Preface Communist Party Congresses: 1898-1900 Politburo of the Central Committee: 1919-1952 Presidium of the Central Committee: 1952-1966 Politburo of the Central Committee: 1966-1991 Secretariat of the Central Committee: 1919-1991 Orgburo of the Central Committee: 1919-1952 Last updated on: 07 Jun 2023 07:40:22; URL: www.archontology.org/nations/ussr/index.php