History of the Soviet Union (1964–1982) in the context of "Collective leadership"

The Political Bureau of the Central Committee of the Communist Party of the Soviet Union, abbreviated as Politburo, was the de facto highest executive authority in the Communist Party of the Soviet Union (CPSU). While elected by and formally accountable to the Central Committee, in practice the Politburo operated as the ruling body of Soviet Russia and the Soviet Union from its creation in 1919 until the party's dissolution in 1991. Full members and candidate (non-voting) members held among the most powerful positions in the Soviet hierarchy, often overlapping with top state roles. Its duties, typically carried out at weekly meetings, included formulating state policy, issuing directives, and ratifying appointments.

The Politburo was originally established as a small group of senior Bolsheviks shortly before the October Revolution of 1917, and was re-established in 1919 to decide on urgent matters during the Russian Civil War. It operated on the principles of democratic centralism, though in practice it increasingly centralized power in the hands of a few. Under Joseph Stalin, the party's General Secretary from 1922 to 1952, the Politburo evolved into an instrument of personal dictatorship. His domination of the body was such that its sessions were often perfunctory, and during the Great Purge from 1936 to 1938, even Politburo members were not immune to persecution. The body was renamed the Presidium between 1952 and 1966. After Stalin's death in 1953, the Politburo's authority became more collective under leaders Nikita Khrushchev and Leonid Brezhnev. During the Brezhnev era from 1964 to 1982, the Politburo grew in size and became increasingly bureaucratic in character. As General Secretary from 1985, Mikhail Gorbachev attempted to reform the Politburo's functions during perestroika, shifting power away from party structures and toward state institutions. The Politburo was officially disbanded upon the banning of the CPSU in late 1991.

The "Era of Stagnation" (Russian: Пери́од засто́я, romanized: Períod zastóya, or Эпо́ха засто́я Epókha zastóya) is a term coined by Mikhail Gorbachev in order to describe the negative way in which he viewed the economic, political, and social policies of the Soviet Union that began during the rule of Leonid Brezhnev (1964–1982) and continued under Yuri Andropov (1982–1984) and Konstantin Chernenko (1984–1985). It is sometimes called the "Brezhnevian Stagnation" in English.

Valentin Sergeyevich Pavlov (Russian: Валéнтин Серге́евич Па́влов; 26 September 1937 – 30 March 2003) was a Soviet official who became a Russian banker following the dissolution of the Soviet Union. Born in the city of Moscow, then part of the Russian Soviet Federative Socialist Republic, Pavlov began his political career in the Ministry of Finance in 1959. Later, during the Brezhnev Era, he became head of the Financial Department of the State Planning Committee. Pavlov was appointed to the post of Chairman of the State Committee on Prices during the Gorbachev Era, and later became Minister of Finance in Nikolai Ryzhkov's second government. He went on to succeed Ryzhkov as head of government in the newly established post of Prime Minister of the Soviet Union.

As Prime Minister Pavlov initiated the 1991 Soviet monetary reform, commonly referred to as the Pavlov reform, in early 1991. Early on he told the media that the reform was initiated to halt the flow of Soviet rubles transported to the Soviet Union from abroad. Although ridiculed at the time, the statement was later proven to be true. In June the same year, Pavlov called for a transfer of power from the President of the Soviet Union to the Prime Minister and the Cabinet of Ministers. When that failed, he joined a plot to oust Gorbachev. In August, he participated in the 1991 Soviet coup d'état attempt, which tried to prevent the disintegration of the Soviet Union. Pavlov was arrested for his involvement in the coup and went on to work in the banking sector in post-Soviet Russia. He can be seen as the last legitimate Soviet head of government since his successor, Ivan Silayev, was appointed by the Russian Soviet Federative Socialist Republic in breach of what were the Soviet constitutional principles.

The time period of around 1985–1991 marked the final period of the Cold War. It was characterized by systemic reform within the Soviet Union, the easing of geopolitical tensions between the Soviet-led bloc and the United States-led bloc, the collapse of the Soviet Union's influence in Eastern Europe, and the dissolution of the Soviet Union in 1991.

The beginning of this period is marked by the ascent of Mikhail Gorbachev to the position of General Secretary of the Communist Party of the Soviet Union. Seeking to bring an end to the economic stagnation associated with the Brezhnev Era, Gorbachev initiated economic reforms (perestroika), and political liberalization (glasnost). While the exact end date of the Cold War is debated among historians, it is generally agreed upon that the implementation of nuclear and conventional arms control agreements, the withdrawal of Soviet military forces from Afghanistan and Eastern Europe, and the collapse of the Soviet Union marked the end of the Cold War.