What the real issue here is South Korea; had those jackasses since the Korean war moved or built a new city away from the damned border away from the North's artillery reach, and built up some serious defense, we would not be in this jam. Meantime, their president gives us a hard time about even having THAAD. They don't want to "antagonize" the pot belly pig. If not for them we would have no problem, but if we go in preemptively, they blow the shit out of Seoul. If we don't launch and just sit on our hands, we are made to look like the idiots, bullied by this little country, or worse, they get off 10 nuclear ICBM's and a third or half of them hit U.S. Targets. THEN we launch a nuclear counter-strike after millions of Americans die, we blow the smithereens out of North Korea, but not before South Korea takes it in the head.
Either way, South Korea gets its ass handed to them, so I say that unless China acts VERY VERY SOON to stop Kim and disarm his nuclear arms, we GO IN and take out Kim and his bottle rockets WHILE WE STILL CAN. Before we wait too long. And that includes his subs. Last people to make such threats against us was al-Quada--- --- and they gave us 9/11 with just a handful of pilots, and like now, we heard the warnings but JUST KEPT WAITING TOO LONG.