IF - " Kim / North Korea " were to be pointedly ignored by Trump and the USA there would be no excuse for Kim to arm and look like a hero to his population !
But since Trump has no comprehension of the deeper diplomatic games being played and cannot stop tweeting the USA is merely becoming the laughing stock of the globe. Makes Russia and China look sane.
As for sanctions - when has that ever stopped the trigger happy nut bars ?!
Ultimately any Korean military conflict will be tragic - if it should go nuclear tens of millions will die. Modern nuclear devices make the likes dropped on Japan look like mere fire crackers. Should - God forbid - hydrogen weapons be used then all bets are off ..... The USA being remote will be relatively safe - the PAC Rim is another matter.