 Roosevelt and Stalin spent much of the conference trying to convince Churchill to commit to an invasion of France, finally succeeding on 30 November when Roosevelt announced at lunch that they would be launching the invasion in May 1944.This pleased Stalin, who had been pressing his allies to open a new front in the west to alleviate some pressure on his troops.This decision may be the most critical to come out of this conference, as the desired effect of the relief of Soviet troops was achieved, leading to a Soviet rally and advance toward Germany, a tide Hitler could not stem.