The three years of struggle and attempted negotiations between Poland and the Soviet Union over the readjustment of their frontiers were concluded by a two-fold decision. Thanks to Moscow, Poland was given a government which readily consented to give up both the Western Ukraine and White Ruthenia, territories occupied by Poland after the First World War; now they become parts of the Soviet Union. On the motion of Viacheslav Molotov, the Soviet Commissar of Foreign Affairs, Ukraine was accepted as a member of the world organization, the United Nations.
The first event means that after six hundred years, Poland has withdrawn her claim to an extensive tract of land which she ruled at times as far east as the River Dnieper and beyond. Polish ambitions to control the Ukrainian and White Ruthenian lands and to assimilate these two peoples culturally in order to make them an ethnographic Polish entity, with some exceptions of course, failed.