Brian Reynolds Myers -- whom I was familiar with only through his brilliant polemic "A Reader's Manifesto" -- has an article at OpinionJournal explaining why the South Koreans aren't particularly happy with our efforts to "protect" them from North Korea. This lends even more support to the policy (which I support) that we should disengage from the Korean situation: withdraw all our military forces immediately, with a clear statement that we have no further commitment to giving military (or other governmental) aid to South Korea.
It is absolutely insane to have military forces to "protect" or "help" people who do not want our protection or help, whether in Korea or Iraq. Anyone who espouses such a policy is either an idiot or a liar, depending on whether or not he believes what he says. (And it is immoral to use military force for any reason other than to protect people.)