Well, right now, the current US administration/UN response has been to threaten more sanctions. Hmmm, let's see the Nork's only trade with China and even then it's bupkis. We've also threatened to make really unhappy faces for much longer then we've done in the past, along with the tapping of the toe, and putting our hands on our hips.
If I was POTUS, I would go on TV and say:
"Kim Jong Il, There are four wings of nuclear armed B-52's, B-1's and B-2's at Failsafe postions just outside your airspace, I've also retargeted half of our Minutemen missles and 1/3 of our Boomers on your pissant country.
DO I have your attention NOW ??
Good.
Here's the deal. Stop with the missles and you will dismantle the nuke program with US inspectiors watching. In return, we'll send you food and oil, so your people can stop eating dirt and bugs while living like cavemen.
With this broadcast those bombers now have the GO order,and Land and Sub based Missles will launch upon the first detonation of the Air dropped nukes. Kim Jong Il, the clock is running.....call me."
Yes, I am in a pissy mood today, why do you ask ??