The office of Premier of the Soviet Union was synonymous with head of government of the Union of Soviet Socialist Republics (USSR). Twelve individuals became premier over the time span of the office. Two of the twelve premiers died in office of natural causes (Vladimir Lenin and Joseph Stalin), three resigned (Alexei Kosygin, Nikolai Tikhonov and Ivan Silayev), and three held the offices of party leader and premier simultaneously (Lenin, Stalin and Nikita Khrushchev). The first premier was Lenin, who was inaugurated in 1922 after the Treaty on the Creation of the USSR. Ivan Silayev spent the shortest time in office at 126 days in 1991. At over fourteen years, Kosygin spent the longest time in office, and became the only premier to head more than two government cabinets; he died shortly after his resignation in 1980.
Following the August 1991 Soviet coup d'état attempt, the State Council of the Union of Soviet Socialist Republics (USSR) , but also known as the State Soviet, was formed on 5 September 1991 and was designed to be one of the most important government offices in Mikhail Gorbachev's Soviet Union. The members of the council consisted of the President of the Soviet Union, and highest officials (which typically was presidents of their republics) from the Soviet Union Republics. During the period of transition it was the highest organ of state power, having the power to elect a premier, or a person who would take Gorbachev's place if absent; the office of Vice President of the Soviet Union had been abolished following the failed August Coup that very same year.