Just a crazy idea I got.
While reading about the Spanish civil war, it struck me that Francos army where in part black, containing tribal warriors recruited in North Africa. Thus Hitler, beeing a racist, should side with the Republic, fearing that the black soldiers would rape white women.
Not to mention that he claimed beeing a socialist (see party name) and a secondary objective where keeping the other countries pre-occupied while he did and planed what he did.
I'm sure I get something wrong, and use to much logic and reason. However, WI Hitler did side with the republic after a few month (I think it would have been hard moving troops over the Med if the Germans opposed it)?