Mikhail Gorbachev Nikita Khrushchev. He was appointed the First Party Secretary of the Stavropol Regional Committee in 1970, in which position he oversaw construction of the Great Stavropol Canal. In 1974 he moved to Moscow to become First Secretary to the Supreme Soviet and in 1979 became a candidate member of the Politburo. Within three years of the death of Soviet leader Leonid Brezhnev, following the brief "interregna" of Yuri Andropov and Konstantin Chernenko, Gorbachev was elected general secretary by the Politburo in 1985. Although committed to preserving the Soviet state and to its socialist ideals, Gorbachev believed significant reform was necessary
Mikhail Gorbachev and following the Chernobyl disaster of 1986 pursued this agenda. Gorbachev's policies of "glasnost" ("openness") and "perestroika" ("restructuring") and his reorientation of Soviet strategic aims contributed to the end of the Cold War. Under this program, the role of the Communist Party in governing the state was removed from the constitution, which inadvertently led to crisis-level political instability with a surge of regional nationalist and anti-communist activism culminating in the dissolution of the Soviet Union. Gorbachev later expressed regret for his failure to save the Soviet state, though he has insisted that his policies were not failures but rather were