The first 24 hours would see most of Seoul destroyed.
That’s why we would have to nuke them. Obama would never give that order, however. Our nation and our allies are in peril until he leaves the White House.
Well, that is a bit of a problem. Kind of silly to have their capital so close to the border. But, seriously, if they could survive the first volley, the North Koreans would eventually collapse...would be downright messy I am sure.