There has been enough experience to show that N. Korea’s communist government can not be negotiated with — it doesn’t work. Offers of aid or trade have been tried and have not, and will not benefit us in any way. Negotiation with these people is futile and perhaps worse, it gives them a reason to continue their bad behavior. So the biggest DON’t is DON’t negotiate with N. Korea.
What then should be done?
1. Announce that we will use any and all missile launches from N. Korea as an opportunity to test and hopefully perfect our missile interception capabilities.
2. Equip S. Korea and Japan with nuclear missiles capable to striking N. Korea. Do it now.
3. The Chinese communists will be pissed. Tell them to get on board with a program to overthrow the Kim regime in N. Korea.
4. Make every effort to communicate directly with the N. Korean people and encourage them to overthrow the Kim regime.
Direct threats of nuclear attack, whether from N. Korea or Iran or elsewhere should be dealt with directly and strongly, not timidly. To give a nuclear adversary even the slightest hint of weakness might encourage an unwise and reckless action by the threatening party.