Thank you. My opinion, for what it is worth, is we should treat North Korea in exactly the same way as you advocate. Parenting 101: if you ignore bad behavior, and it does not elicit the desired response, then the child learns. What the PRK needs to learn is that they need to play nice if they want to get the attention they crave so much.
Sadly, I’m afraid that the money-hungry media is not likely to change their ways. Sensationalism sells, and they’ll make it up if they have to to survive.