Aside from his being a racist murdering jerk he was not that bright.
But neither were the people following him.
Hitler’s thinking basically was this:
Britain has their colonies, I should have mine, I don’t make any claims on Britain’s colonies, they can have them, in fact, if they have any problems in their colonies, I can help them.
Heck, Britain doesn’t like the Bolsheviks neither. I can take care of that problem too for them.
Surely Britain can’t turn down such a great deal, right? I mean we’re all Anglo-Saxons.
And believe me, there were a lot of folks in Britain that would have gone for it, including a certain King.
And when Britain didn’t go for it, he basically blamed it all on “International Jewish Finance”. And that’s when you got Krystallnacht and eventually “The Final Solution”.