N Korea lacks a compelling national interest to the USA.

No oil or other strategically important resources.

No immanent threat to US interests or allies.

In general, using the military for humanitarian reasons will be a non-starter. Look at recent precedent.

Went into Somalia, to what ultimate end? Ignoble retreat.

We didn't go into Rwanda. Ultimate end? half-million murdered civilians. World-wide commitment to sympathetic handwringing and a couple of show trials. Whoopee.

Went in and out of Liberia faster than a sailor on a saturday night whore. Result: nuttin much.

B