For the plight of Poles who remained in the Soviet interior until the defeat of Germany, see Polish population transfers (1944–46) and the population exchange between Poland and Soviet Ukraine. As the new border between the postwar Poland and the Soviet Union along the Curzon Line (requested by Stalin at Yalta) has been ratified, the ensuing population exchange affected about 1.1 million Poles (including Polish Jews) as well as close to half a million ethnic Ukrainians. According to official data, during the state-controlled expulsion between 1945 and 1946, less than 50% of Poles who registered for population transfer were given the chance to leave the westernmost republics of the Soviet Union. The next transfer took place after Stalin's death in 195559.