- After Stalin's death in 1953, Khrushchev publicly denounced Stalin and began destalinization, opening up the Soviet Union. In the 1970s, Nixon and Brezhnev initiated détente and SALT talks to limit nuclear weapons. Reagan took a stronger stance against communism in the 1980s.
- Mikhail Gorbachev implemented glasnost (openness) and perestroika (economic restructuring) in the 1980s to reform the Soviet Union. This led to the fall of the Berlin Wall in 1989 and German reunification in 1990.
- Attempts to depose Gorbachev in a 1991 coup failed when Yeltsin and the people refused to back down. This