At the start of World War II, the Comintern supported a policy of non-intervention, arguing that the war was an imperialist war between various national ruling classes, much like World War I had been, but when the Soviet Union itself was invaded on 22 June 1941, the Comintern changed its position to one of active support for the Allies. On 15 May 1943, a declaration of the Executive Committee was sent out to all sections of the International, calling for the dissolution of the Comintern. The declaration read: The historical role of the Communist International, organized in 1919 as a result of the political collapse of the overwhelming majority of the old pre-war workers' parties, consisted in that it preserved the teachings of Marxism from vulgarisation and distortion by opportunist elements of the labor movement.