International Women’s Day: strikes and demonstrations in Petrograd, growing over the next few days, starts the Russian Revolution
Bolsheviks overthrow provisional government led by Alexander Kerensky, and Vladimir Lenin takes over. He established a communist government.
Lenin dies and is replaced by Joseph Stalin. Stalin was a dictator and sent millions to labor camps.
The cold war begins
Winston Churchill delivers "Iron Curtain" Speech
Marshall Plan is announced
Stalin dies and is succeeded by Georgi Malenkov as prime minister and by Nikita Khrushchev as first secretary of the Central Committee of the Communist Party.
Khrushchev is replaced as first secretary of the Communist Party by Leonid Brezhnev; Aleksey Kosygin becomes prime minister. Brezhnev invaded Czechoslovakia, and achieves parity with the U.S. on strateigic nulear weapons.
Brezhnev dies and is replaced by KGB chief Yuri Andropov.
Andropov dies and is replaced by Konstantin Chernenko.
Chernenko dies and is replaced by Mikhail Gorbachev as general secretary of the Communist Party. Gorbachev begins an anti-alcohol campaign and promulgates the policies of openness, or glasnost, and restructuring, or perestroika. His reforms hastened the end of communism
Chernobyl nuclear power station explodes, showering large areas in Ukraine, Belarus and beyond with radioactive material.
Yeltsin elected president of the Russian Soviet Federative Socialist Republic by the latter's parliament and leaves the Soviet Communist Party.
Congress of People's Deputies votes for the dissolution of the Soviet Union.
Leaders of Russia, Ukraine and Belarus sign agreement setting up Commonwealth of Independent States.
Gorbachev resigns as Soviet president; US recognizes independence of remaining Soviet republics.
Russian government takes over offices of USSR in Russia.