Hitler was an idiot: He killed some of his best minds when he decided the Jews were the perfect scapegoat. He invaded Western Europe and then he attacked Russia too. Bonehead move caused by believing your own propaganda. The Germans were so superior they couldn't lose! HA!
He should have just gobbled up a few small surrounding countries like the Soviets did later, and nobody much would have cared. And not by blitzkrieg, but by politics and economics. He could have ended up with the EU, with Germany at the head. If he just did it slow and careful, Germany would be running the world by now.