Consequences aren’t nuclear annihilation of the planet. The Russians won’t survive a nuclear exchange, too much of their infrastructure is massed together and has been targeted by the US since the 1950’s. The Chinese have it even worse. Plus we owe the Chinese a lot of money.
If the North Koreans launch a missile, then China will most likely invade them before we can. China likes to let NK get under our skin to a point, then talks them down. It’s an old game. We have to play it.
Do not believe these idiots on Medium who tell you nuclear war is right around the corner. It’s not. The nuclear powers have less reason to go to war now than ever.