[kingu]

Leaving Korea now would be seen as an open door to invade by the North. War would immediately follow.

With what? Seriously, what would North Korea use to invade the south with? They don't have the fuel to transport the supplies to the front, much less extend the front beyond the DMZ. Three months from now, they might have a hard time handling even resupplying the DMZ.

If South Korea can't hold them back on their own, after fifty years, then perhaps they should build fewer cars and more tanks. Self defense is the primary mission of any nation state - if South Korea wishes to be our 51st state, there is a process for this to come to be.

[justshutupandtakeit]

You act as though those lunatics use reason and logic and therefore when reason says not to invade or try they won't.
I wish I shared your optimism.