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
Mikhail Gorbachev to reduce party control of the government apparatus. He proposed a new executive in the form of a presidential system, as well as a new legislative element, to be called the Congress of People's Deputies. Elections to the Congress of People's Deputies were held throughout the Soviet Union in March and April 1989. This was the first free election in the Soviet Union since 1917. Gorbachev became Chairman of the Supreme Soviet (or head of state) on 25 May 1989. On 15 March 1990, Gorbachev was elected as the first executive President of the Soviet Union with 59% of the