The US’ only goal should be to wipe out their airfields , destroy as much of their artillery as possible so they no longer have the means to fight both South Korea and Japan . Also we must diplomatically insure that China won’t get involved and kill a million North Koreans near their border . No other involvement . No occupation by the US .
This seems like a good time to review the various levels of North Korean threats:
(a) Furious unceasing decisive actions
(b) Unimaginable hellfire raining down on all your cities
(c) Unleashing of forces never before known until there is absolutely nothing left
(d) bad stuff we are working on, wait and see, it’s bad
(e) annihilation of all matter in universe
(f) actual firing off of a missile
(g) hey we got five minutes to live, party time