“Killing a few million people in Seoul is not the action of a sane person.”
Source for your estimate? The highest I’ve read from SK sources is 200,000.
I’ve seen both figures, it all depends on if the estimates of the numbers of emplaced hardened artillery sites are correct, how much warning, whether the NORKs use gas (something in all the excitement over Nukes & missiles we have forgotten about!), how well the evacuation goes (under attack or not!) and how quickly we can take out the artillery sites (in artillery I include tactical missiles) and probably a dozen other intangibles.