It is a good thing in general that North Korea is making overtures, despite their history of lying and reneging on promises. The American Right will attribute this to Trump’s hard stance and threats and perfect unpredictability, which is hard even for a tyrant to deal with.
But actually without ever seeing any documents or hearing any meetings, which we will never see or hear, this is because China has aspirations and she is tidying up a problem that is now hindering her advances. If there is a peace it enormously helps China, whereas if there were to be a peace in Syria it helps her not a whit so she is standing on the sidelines letting thousands die.
We live in a world of ethical relativity and it is killing our political evolution.