Well, how long will that numerically inferior People’s Liberation Army detachment hold back against the invasion of China be the North Korean army?
Kim Jong Un is a pretty ambitious lad, and the way to the United States with a land army with limited trans-oceanic transport capability, is to march up through China and the eastern part of the Russian Federation, to cross at the Bering Strait and invade Alaska.
Attacking the continental US through Alaska worked so well for the Japanese. They did not even take Hawaii and hold it.
Grabbed the heck out of the Philippines for a while, though.
Let them take Alaska! That would be a cruel trick. Bring Alaskans back to Yukon etc, let them build up in Alaska in very large numbers, then just take em all out in one fell swoop. Just tell folks it’s open season and let nature run its course. Chinese problem forever solved, or maybe at least a few hundred years.
The Philippines are pretty much in the Japs' back yard, though.