A lot of focus on the Nukes and Missiles but that is not the issue, at least in my pea brain.
With moderate effort we could take out his nuclear sites and the missiles, it is the 18,000 artillery pieces with in close proximity of Seoul (a city of 10 million), that is the real tactical problem. I would love to be the parked in a SCAR orbit just south of the 38th coordinating with dumb trucks full of SDB and CBU pushing through every five minutes.