fsstnotch I don't think that the Chinese would allow any massive migration from NK into China. They play by their own rules and wouldn't think twice about telling them to turn around, or else........ However you never know what they will do. They have been known to slaughter their own people.
Buzz Building on your dream scenario, the US could tell the Chinese, in advance, that the next NK missile to be launched will not go very far once it is over open water. ZAP, it's gone.
Wayne