This is the root of the problem with trump. He has been surrounded by yes men and sycophants telling him he's amazing for decades and when someone refuses to submit to him he has a mental meltdown. He's bullied his way into his position, but there are world leaders who won't be bullied.
And none of them are yes men/women
When he called Denmark to tell them he wanted Greenland the Danish thought he was joking! That's how used he is to getting his way. Anyone who doesn't give him what he wants is removed from his orbit. When the Danish prime minister (a woman) told him 'no' his brain must've short-circuited.