In November 1943, Stalin met with Churchill and Roosevelt in Tehran. Roosevelt told Stalin that he hoped that Britain and America opening a second front against Germany could initially draw 30–40 German division from the Eastern Front. Stalin and Roosevelt, in effect, ganged up on Churchill by emphasizing the importance of a cross-channel invasion of German-held northern France, while Churchill had always felt that Germany was more vulnerable in the "soft underbelly" of Italy (which the Allies had already invaded) and the Balkans. The parties later agreed that Britain and America would launch a cross-channel invasion of France in May 1944, along with a separate invasion of Southern France. 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 tabled.