Clay suggested I post a link to an N.Y.Times article which recently appeared.
Acc. to the article, China and So. Korea have agreed to calmly discuss the boundaries of a kingdom (Koguryo) that disappeared from the maps 1,300 years ago.
Find the article at:
http://www.nytimes.com/2004/08/25/international/asia/25korea.html?ex=1094500797&ei=1&en=f901a233c07fca4b
.