(2) Build a wall along the 38th parallel
(3) Withdraw all U.S. troops there but provide naval and air support
Man, do (1) and 50% of their population will most likely die in 2-3 years.
Take any of these steps and NK rolls South of the DMZ. They can take Seoul in a matter of days or reduce it to rubble if they choose. We could do nothing to stop it and I don't think that we should even try. Too many South Koreans think that America is the source of their problems. They have appeased their evil relatives up north and helped to create this mess. SK could have done more to stop Kim and secure their own future. Let's see how they enjoy the fruits of their thought process.
just turn the north to glass, problem solved...