Communist Left of Spain (Spanish: Izquierda Comunista de España) was a Trotskyist political party during the Second Spanish Republic. Its leader was Andrés Nin Pérez, who had been a supporter of the Left Opposition while living in Russia. Although the group was affiliated to the International Left Opposition, Leon Trotsky objected to its name, believing that it failed to stress that the organisation viewed itself as an external faction of the Communist Party. By April 1936, on the brink of the Spanish Civil War, Trotsky had denounced the Spanish left communists: