Conservative estimates of KIAs in Seoul are 1M before the NK's underground artillery tubes can be silenced.
Yup, 250,000 artillery tubes/missile rails pointed at Seoul makes for a heck of a Mexican standoff.
I once had a liberal tell me that if NK was such a problem we should just go ahead and bomb them and tell SK “sorry about that, better luck next capital” - in other words, condemn over a million South Koreans to death and tank the Asian economy. I found that statement very illuminating - on just how insane liberals are.