The USSR and Yugoslavia sign the Belgrade declaration, legitimising different intepretations of Marxism in non-Soviet countries.

The Belgrade declaration is a document signed by President of Yugoslavia Josip Broz Tito and Soviet leader Nikita Khrushchev on 2 June 1955 that brought about a short reconciliation between the two states. Negotiations leading up to the signing of the document took place between 27 May and 2 June.

Marxism is a political philosophy and method of socioeconomic analysis that uses a dialectical materialist interpretation of historical development, known as historical materialism, to understand class relations and social conflict. Originating in the works of 19th-century German philosophers Karl Marx and Friedrich Engels, the Marxist approach views class struggle as the central driving force of historical change.