Originally Posted by
Estherna
Well South Korea didn't waited to do that. That what they call the Sunshine politic. The idea is to try to develop North Korea economy and to bring the two countries closer, with the hope that at some point they will be close enough to merge peacefuly. But it is complicated as the Kim family as well as the people of its entourage knows very well that they have everything to lose in a reunification. Nowadays, South Korea is the second trade partner of North Korea (first one being of course China). And furthermore, there is so much to do that it could take centuries at this pace. Just to give you an idea, latest projections I could find speak of 500 Billions of dollars and 20 years of work to bring North Korea to the living standards of.... Cuba.
For the UN, the organization, as benevolent it could wish to be (because they aren't that much benevolent), it is dependant of what its members want, mainly the 5 permanents members of the Security Council. So, as you can guess, China (and also Russia) will never allow anything that could lead to the fall of Kim's family. They don't want American military bases on their borders. That would restrict their own freedom of action and place a direct threat on them.
Chinese aren't pleased by North Korea of course. They don't need that kind of turmoil in their frontyard, but they can't totaly shut him down or the country will crumble. So they keep up the good face and let things go their ways, while insuring everybody that they are concerned. That diplomacy for you. And you know what? With Trump, it is working very well. While he plays his little game of provocation with Kim, China gains a lot. They are overjoyed that he got out of the TTIP and that he is focusing on the big bad North Korea and gives them what they want to reinforce their influence in Asia.
And finally for the assasination plot, it is not about being able to do it. It is about having the idea to do it. People in North Korea would even think of that.