Kim Jong Un tests 'high-tech' weapon in message to the US
https://edition-m.cnn.com/2018/11/15/asia/kim-north-korea-missile-kcna-intl/index.html?r=https%3A%2F%2Fedition.cnn.com%2F
What Kim wants is stability of its dictatorship. If North Korea opens market to other countries and people there become richer and richer, it endangers Kim's dignity. It's easy to imagine what happened to Taiwan and South Korea under economic growth.
So, in order to persuade Kim into mitigating provocative diplomacy, it would be needed to show Kim how to ensure his position clearly even after liberation of North Korea.
