: The duty of all communist states to defend socialism everywhere, not just within their own borders.
: The doctrine was explicitly codified to justify the Warsaw Pact invasion of Czechoslovakia after Alexander Dubček attempted "socialism with a human face". 🛠️ Key Tenets in Practice The Soviet Concept of Limited Sovereignty from ...
Formulated in 1968, this doctrine held that when forces "hostile to socialism" attempted to turn a socialist country toward capitalism, it became a common problem and concern for all socialist countries. : The duty of all communist states to
: Early Soviet theory emphasized "proletarian internationalism," suggesting workers' interests across borders were more vital than national boundaries. : The sovereignty of a socialist state is
The doctrine transformed Eastern Europe into a sphere where independence was strictly monitored.
: Soviet officials jokingly referred to this new policy as the Sinatra Doctrine —allowing Eastern European states to do things "their way".
: The sovereignty of a socialist state is restricted when its actions threaten the security or ideological purity of the Eastern Bloc.