 Lenin saw this as an expression of Great Russian ethnic chauvinism by Stalin and his supporters, instead calling for these nation-states to join Russia as semi-independent parts of a greater union, which he suggested be called the Union of Soviet Republics of Europe and Asia.After some resistance to the proposal, Stalin eventually accepted it, but—with Lenin's agreement—he changed the name of the newly proposed state to the Union of Soviet Socialist Republics (USSR).Lenin sent Trotsky to speak on his behalf at a Central Committee plenum in December, where the plans for the USSR were sanctioned; these plans were then ratified on 30 December by the Congress of Soviets, resulting in the formation of the Soviet Union.