 Stalin was impatient for the UK and US to open up a Western Front to take the pressure off of the East; they eventually did so in mid-1944.Stalin insisted that, after the war, the Soviet Union should incorporate the portions of Poland it occupied pursuant to the Molotov–Ribbentrop Pact with Germany, which Churchill opposed.Discussing the fate of the Balkans, later in 1944 Churchill agreed to Stalin's suggestion that after the war, Bulgaria, Romania, Hungary, and Yugoslavia would come under the Soviet sphere of influence while Greece would come under that of the West.