I agree wholeheartedly that Trump is totally out of line with those remarks, and the US is by no means innocent of aggression. But if things really are falling apart in NK as the rumors say, then this is precisely the kind of rhetoric one would expect. NK would need to start a war or risk losing power. That, to me, is the scariest part.
For all of the posturing, I find it hard to believe that we would actually take the bait on that. Then again, Trump could use a diversion like that as well. Is it any wonder why wars get started? Makes me sick.