Maybe his threat is not empty and he really plans on attacking. Even worse.
One of the worst diplomatic mistakes is to over threaten and have to back down. Trump has done this about a dozen times so far. He does not care about the country, just making sure his pathetic supporters (like
@Stroker ) support him. They hear the bluster and get all worked up but lack the information and intelligence to realize that the whole thing falls apart later and Trump looks like an ass after having lost
even more credibility.
Diplomacy is all about doing things that serve the goals of your country - not just the President.
What is happening between Trump and Korea will pretty much guarantee a workable Iranian nuclear device soon. Expect it within a year of Trump pulling out of the "worst deal in history" that this moron claims we made with Iran.