Communist Left of Spain

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Communist Left of Spain (Izquierda Comunista de España, ICE) was a far-left Trotskyist political party during the Second Spanish Republic. Based in Barcelona, its leader was Andreu Nin i Pérez. The ICE was founded in 1931 to promote revolutionary socialism and aligned with the Left Opposition in exile, though Trotsky later objected to the name, saying it suggested an external faction of the Communist Party of Spain.

In 1935, the ICE merged with the Bloque Obrero y Campesino, a Right Opposition group, to form the Workers' Party of Marxist Unification (POUM). Nin led POUM until his kidnapping and death by NKVD agents in 1937. On the eve of the Civil War, Trotsky criticized the Spanish left communists for lacking a clear program and perspective, saying they missed an opportunity to lead the Spanish working class.