However the politics in Moscow took a different course of events, and eventually the accession of Joseph Stalin saw a new policy adopted: Socialism in One Country. In accordance with which, expansionist and irredentist claims were removed from Soviet ideology, which instead would focus on making regions economically viable. Thus on March 1924, by decree of the All-Russian Central Executive Committee, Russia returned most of territories that made up the Vitebsk and Mogilev Governorates, as well as parts of Smolensk. The passing of land that largely survived the destruction of war not only doubled the SSRB's area to 110,600 square kilometres, but also raised the population to 4.2 million people.