The Brezhnev Doctrine of 1968 aimed to prevent the overthrow of communist regimes through Soviet intervention in foreign countries.
The Brezhnev Doctrine of 1968 stated that the Soviet Union would intervene in foreign countries for the purpose of preventing the overthrow of communist regimes. This doctrine was exemplified by the Soviet invasion of Czechoslovakia in 1968 during the 'Prague Spring' to suppress reform movements attempting to challenge communist rule.
https://brainly.com/question/1338123