martin14 martin14:
Let's try this scenario, just for giggles.

There are not enough South Korean and US troops to face off against the North.
Upon invasion, the use of tactical nukes will be authorized by Oboomba.
No involvement for Canada at all, except for the decontamination contracts.

Nah, the Coalition had fewer troops than Saddam in Gulf War 1 and still whipped his ass.
Smart bombs, stealth and all the other high tech force multipliers the US could bring to bear would eliminate most of the North Korea's numerical advantage. And the South Korean military is far better equipped, supported, and trained than it was 50 years ago.
Odds are it would be a rout and China would step in to protect its interests - not wanting a rich, powerful democracy right on its border. I doubt China would fight us directly (after all, that would kill their economy and maybe even the Chinese Communist Party), but I could see them getting the UN and the rest of the world behind some sort of status quo non-solution.