http://www.kcna.co.jp/item/2013/2013...0405-12ee.html
That must be a good enough reason to go in and blow them up - The missiles I mean, not all the Koreans...
Go in now take out their missiles, blow up a couple of strategic bridges and that's it - Game Over.
China will shout a bit but they don't want the Americans to have an excuse to move more military assets in to the region.