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 Soviet Union the political ouster of Nikita Khrushchev (1964), the national politics were dominated by the Cold War; the ideological U.S.–USSR struggle for the planetary domination of their respective socio–economic systems, and the defense of hegemonic spheres of influence. Nonetheless, since the mid-1950s, despite the Communist Party of the Soviet Union (CPSU) having disowned Stalinism, the political culture of Stalinism—an omnipotent General Secretary, anti-Trotskyism, a five-year planned economy (post-New Economic Policy), and repudiation of the Molotov–Ribbentrop Pact secret protocols—remained the character of Soviet society until the accession of Mikhail Gorbachev as leader of the CPSU in 1985. The history of the Soviet