I believe the Nazis should have concentrated on Moscow trying to create chaos in the Soviet leadership....Stalin was on the ropes, getting him out of the picture should have been Job One for the Nazis, who would have taken his place? I think without Stalin, the defense falls apart.
“I believe the Nazis should have concentrated on Moscow trying to create chaos in the Soviet leadership....”
Probably a tougher target and not as strategic as Stalingrad.
They were pretty close to Moscow at some point too. If memory serves, German soldiers could see the Kremlin minarets.