Yuri Andropov
Konstantin Chernenko
Leonid Brezhnev was the leader of the Soviet Union in the 1970s.
Mikhail Gorbachev
Mikhail Gorbachev was the most progressive leader of the Soviet Union. He was not a terrorist and served his mission by relaxing the restraints of other USSR hard line leaders such as Stalin.
Stalin Krushchev Brezhnev Gorbachev Yeltsin cant remember first names sorry (Leaders Of The USSR)
There was no Tsar (Czar) in Russia from 1917 onward. The Bolshevik Revolution of 1917 removed that regime, and replaced it with the Union of Soviet Socialists Republics (USSR) around 1922.
The Soviet leader most associated with perestroika is Mikhail Gorbachev.
Lenin Stalin Khruschev Brezhnev Tchernenko Andropov Gorbachev Postcommunist Russia: Yeltsin, Putin, Medvedev
They staged a coup against Mikhail Gorbachev.
The Soviet leaders after Stalin were: Georgy Malenkov (March 6 to March 13 1953) Nikita Khruschev (1953 - 1964) Leonid Brezhnev (1964 - 1982) Yuri Andropov (1982 - 1984) Konstantin Chernenko (1982 - 1985) Mikhail Gorbachev (1985 - 1991)
Begining(1947)-1953: Joseph Stalin 1953-1964: Nikita Khrushchev 1964-1982: Leonid Brezhnev 1982-1984: Yuri Andropov 1984-1985: Konstantin Chernenko 1985-End(1991): Mikhail Gorbachev
You are gonna have to be a little more specific. Czars were the Russian leaders, such as Mikhail Gorbachev and Joseph Stalin.
The only ones who weren't completely worthless or completely corrupt were Mikhail Gorbachev and Boris Yel'tsin.