I have done some reading, to the tune of several dozen books.
I can't say I've read "several dozen books" on Nazi Germany, but I've read many and Hitler most assuredly was no socialist or internationalist. He didn't give a damn about socialism or he wouldn't have purged the true socialists from the party. He was a nationalist dictator, or "facist" (to use the terminology of the left which isn't quite accurate). He was no friend of internationalists.