re: WWII buffs: let's talk about Germany's biggest strategic blunder

Once the allied forces were in place Germany won no more victories. Bringing Spain along would have been problematic but easily overcome.

US would have amassed troops in Eastern Eupore/Russia and marched West. France would have been liberated last and probably left in ruins but I don't really care.

German was the key. A single objective of invading Germany and driving a stake into the Axis power heart would have killed off Italy and the African campaigns. Japan would still need to be dealt with.

Remember we had the A bomb first. We could have nuked Berlin as well.

In short, Hitler had no real chance. Too many fronts to defend against a superior enemy.