How did Hitler justify invading Denmark and Norway to his country?

As far as I am aware, Scandinavians in general were seen the top of the line ‘ubermensch’ that were a paragon of good and strength. With that idea planted into the German populace, how did Hitler justify invading two Scandinavian countries both to the civilian population and to his government? I mean this in both the moral sense (ie “why are we fighting the ‘good’ race?”) and in a power-sense (“who’s to say that we’ll win against these ubermensch?”)