> I want to believe that since everyone, even common folk like you and I, are aware of that possibility, the militaries of South Korea and the US must have something in place to mitigate that

And NK has counter-counter-measures to those counter-measures. What about the world makes it that our side must win? History is littered - overflowing, really - with the bodies of the good guys.

I've recently read experts saying it would take over a day to eliminate the artillery. It's universally believed by such people, as far as I've read, that the damage to Seoul and its people would catastrophic.