According to a recent docu-drama, the allies were actually content to wait for stratigic bombing to break the German will to resist, but in fact in secret meetings Stalin forced the allies to invade Europe, hence Operation Overloard, under the threat he was willing to sue for peace with Hitler if we did not "take the heat" off of the Russian Army by presenting the German military with another major front to fight.
Now the historical record tells us that before the outbreak of hostilities, Stalin and Hitler had entered into various treaties and pacts, and at that time, the Soviet Union and Japan had a standing peace treaty to protect each others' "back-doors", so they in fact could not afford to ignore his threat, and this was what actually began the planning for Overlord.
What do you-all think?
Eddie