My answer to that last question is simple: NO.

BTW, whats the situation in North Africa during this 'scenario'?

The British would not be able to amount a mainland-Europe invasion by itself. Does not have the manpower nor the vehicles/ships to be able to do so by itself. The troops that were occupied by the Normandy Landings would be sent to Eastern Front, putting additional pressure on Russia. Japan pressing in from other side, with its own 'Never Surrender' Attitude would put losses on both sides in the Millions. I think Russia would be literally be bled dry in such a protracted war with no additional help. Perhaps another early truce (like in WWI) to save itself?

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