While we'd get them eventually it's entirely possible nearly a million South Korean civilians would die.
I bet more than a million. Mustard gas is heavy, and runs downhill.
If I were a kenyan in hawaiian clothing, I would pull my fleet away and start running bomber patrols. Massive pullout of ground forces too. At least on film. And use ABC to show footage of it to the world.
When rattling sabres, a claymore makes a more rubust clang...
True, but I don’t know how much enthusiasm the North would have for simply slaughtering civilians while the two most tech advanced armies are rolling up through your territory. Perhaps that’s not a risk that should be taken though, given the potential for civilian deaths.