They also disagreed on the nature of the Soviet state. Lenin called for establishment of a new federation named the "Union of Soviet Republics of Europe and Asia", reflecting his desire for expansion across the two continents and insisted that the Russian state should join this union on equal terms with the other Soviet states. Stalin believed this would encourage independence sentiment among non-Russians, instead arguing that ethnic minorities would be content as "autonomous republics" within the Russian Soviet Federative Socialist Republic. Lenin accused Stalin of "Great Russian chauvinism"; Stalin accused Lenin of "national liberalism". A compromise was reached, in which the federation would be renamed the "Union of Soviet Socialist Republics" (USSR). The USSR's formation was ratified in December 1922; although officially a federal system, all major decisions were taken by the governing Politburo of the Communist Party of the Soviet Union in Moscow.