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"
19th All-Union Conference of the Communist Party of the Soviet Union rule of law". The Conference called for elections for the governmental soviets at all levels, with secret ballots and multiple candidacies, and it established the Congress of People's Deputies of the Soviet Union. Although Gorbachev had to compromise on some of his several objectives because of conservative resistance, the conference was a significant victory for Gorbachev. 19th All-Union Conference of the Communist Party of the Soviet Union The 19th All-Union Conference of the Communist Party of the Soviet Union was a party conference held by the Communist Party of the Soviet Union from 28 June to 1 July 1988. There