The billionaire's support for the Alternative for Germany (AfD) party focuses on its approach to regulation, but is seen as boosting the cause of the extreme right.

Sometimes you can be lonely even in a room full of people, so perhaps Trump needs the richest man in the world by his side to make him feel loved. But it's also possible that he senses his new best buddy is no longer as interested in him and has instead decided that he's going to play president without him.