History of socialism under challenge from Solidarność, or Solidarity, a labor union under the leadership of Lech Wałęsa. The union was sufficiently threatening to the government that on 13 December 1981, the head of state, Wojciech Jaruzelski declared martial law, suspended the union, and imprisoned most of its leaders. Mikhail Gorbachev (born 1931), who took control in 1985, was the first Soviet leader to have been born after the October revolution. He is remembered for three initiatives: "glasnost", "perestroika", and the "Frank Sinatra doctrine". "Glasnost", or "openness", was Gorbachev's term for allowing public debate in the Soviet Union to an unprecedented degree. "Perestroika"
History of the Communist Party of the Soviet Union and rather than being a locus for change became a bulwark of conservatism. Increasingly, Gorbachev bypassed the party in order to implement his reforms relying instead on governmental bodies. In 1989 Gorbachev allowed other political associations (de facto political parties) to coexist with the Communist Party and in 1990 obtained the repeal of Article Six of the USSR constitution which gave the party supremacy over all institutions in society, thus ending its vanguard status. The Communist Party's power over the state formally ended that same year with the newly created post of President of the Soviet Union. Gorbachev was elected