- 1964 to 1982
- Ended Khruschev's reign
- Sought many military interventions to sustain communism
- Brezhnev Doctrine: a threat to one soviet republic constituted a threat to everyone
- Meant that Russia needed to safeguard the entire USSR with its troops, US-USSR Arms race, successful because of 2 inconsequential leaders, Andropov and Chernenko