FDR could have "demanded" all he wanted - Stalin wouldn't have budged.
Regards,
Fine, then we didn't need to become the supplier to their military. Do you really think they could have beaten the Germans, without the total aid of the allies? Never. As it was, the Germans had no resources, and the allies were acting as Russia's butler. So, Stalin didn't have to budge, but the allies didn't have to bail out his mistake.=
Churchill forced FDR into giving Russia everything, with getting nothing in return. Everyone deserves consideration. There are no free lunches - except for Churchill and FDR.
Russia was a member of the Axis for the first two years of the war. Their treaty allowed the Western War and the Blitz to happen. Why reward them for it.
People should be honest - no single person in the 20th century did more to help communism than Churchill did.