The full understanding of the history of the late Soviet Union and of its successor, the Russian Federation, requires the assessment of the legacy of Leonid Brezhnev, the third General Secretary of the Central Committee of the Communist Party of the Soviet Union (CPSU) and twice Chairman of the Presidium of the Supreme Soviet. Leonid Brezhnev was the leader of the CPSU from 1964 until his death in 1982, whose eighteen-year reign was recognised as the time of social and economic stagnation in the late Soviet Union.