Don't know about North Korea, but America never will. Just look at our history in foreign affairs. America always tells other nations to stand down, but we never do.Besides, military is a huge industry/employer in this country. (Actually our military is the largest employer IN THE WORLD). Too much loss of American taxpayer funded jobs, etc. involved in REDUCING, let alone eliminating our nuclear arsenal. Not good for "business", and if you reduce military expenditures, it's harder to justify ripping off the American taxpayer.