Are US and China sincere partners in disarming North Korea?

Nothing is a bigger threat to world peace since the defeat of Nazism in the second world war than North Korea’s missile and nuclear programme.
And nothing would be a bigger failure of post-war global diplomacy than if a seemingly united world failed to stop a rogue state from making trouble.
This became evident when North Korean dictator Kim Jong-un declared his ambitious nuclear force was complete, after a decade-long cat-and-mouse game with the world. The defiant leader brought in the…