How so? So Trump can aggressively address a nuclear armed country. This is ridiculous line of thinking. Only thing he will be good for is making empty threats like Kim Jong. And will surely get US isolated by those rhetorics.
Trump will just say he's going to bomb NK flat and that'll energize the base that thinks Obama is a total coward for not killing all of those filthy foreigners already.
The real question is whether there are enough people who will follow his kind of pandering. It seems obvious that the guy has absolutely no principles. He will say anything. I don't think there are enough of of them. If there are enough of them then I'm being stupidly naive and have not read the mood of the country correctly. If so we are all fucked, white, yellow, brown, black.