International socialism

Proletarian internationalism, sometimes referred to as international socialism, is the perception of all communist revolutions as being part of a single global class struggle rather than separate localized events. It is based on the theory that capitalism is an international system, and therefore the working classes of all nations must act in concert if they are to replace it with communism. Proponents of proletarian internationalism often argued that the objectives of a given revolution should be global rather than local in scope; for example, triggering or perpetuating revolutions elsewhere.

Proletarian internationalism is closely linked to goals of world revolution, to be achieved through successive or simultaneous communist revolutions in all nations. According to Marxist theory, successful proletarian internationalism should lead to world communism and eventually stateless communism. The notion was strongly embraced by the first communist party, the Communist League, as exercised through its slogan "Proletarians of all countries, unite!", later popularized as "Workers of the world, unite!" in English literature.

Proletarian internationalism was originally embraced by the Bolshevik Party during its seizure of power in the Russian Revolution. After the formation of the Soviet Union, Marxist proponents of internationalism suggested that country could be used as a "homeland of communism" from which revolution could be spread around the globe. Though world revolution continued to figure prominently in Soviet rhetoric for decades, however, it no longer superseded domestic concerns on the government's agenda, especially after the ascension of Joseph Stalin. Despite this the Soviet Union continued to foster international ties with communist and left-wing parties and governments around the world. It directly installed several communist regimes in Eastern Europe after World War II, and backed the creation of others in Asia, Latin America, and Africa. The Soviets also funded dozens of insurgencies being waged against non-communist governments by leftist guerrilla movements worldwide. A few other states later exercised their own commitments to the cause of world revolution; for instance, Cuba frequently dispatched internationalist military missions abroad to defend communist interests in Africa and the Caribbean.

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