He is sending a carrier task group to the area. Maybe a false flag is in order and a reason to go in and kill that dicktator once and for all. China maybe against it but who knows what kind of deal he struck with Xi Jinping. Maybe they agreed to divide up the north between themselves. No one is going to care what happens to the Kim family.
All these years, you have learned nothing. How many countries did get better after US chopped off head of its state leader?
And I guess, you are going to feed 20 million+ Koreans personally after all is done, huh? Know what, those people were brought up to see Kim family the same way you see Statue of Liberty and Constitution. You would not stop believing in freedom if some walking by Samaritan firebombed your home, would you? Youd look for a way to hurt him and his family back (which is precisely what Arabs have been doing since west backed Spring, if I remember).
It is almost hilarious, that so many smart people have problems relating to others.
Anyway, Kim family has to be ousted INTERNALLY by Koreans themselves. Only then through power vacuum and infighting in military junta can country open itself out to the outside - if the resulting unrest is what you wish for.
Personally, I am far more concerned about continent of Africa with its population DOUBLING every three decades. North Koreans if nothing else can actually feed themselves without foreign intervention. I see Trump actions the same way, I saw them in Syria - he wants to show strength and reassure regional allies, which is quite prudent. Not start another war, that will become huge humanitarian and moral problem in the future.