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 of reform was to prop up the centrally planned economy—not to transition to market socialism. Speaking in late summer 1985 to the secretaries for economic affairs of the central committees of the East European communist parties, Gorbachev said: "Many of you see the solution to your problems in resorting to market mechanisms in place of direct planning. Some of you look at the market as a lifesaver for your economies. But, comrades, you should not think about lifesavers but about the ship, and the ship is socialism." Gorbachev initiated his new policy of "perestroika" (literally "restructuring" in Russian) and its