Koreans are upset with Japan about an issue with ownership about some rocks which are many kilometers from either country. As the ownership of the rocks gives territorial rights over the surrounding waters and perhaps some hydrocarbon resources this is actually a pretty big deal. But when I see the products of the way children are being taught about this issue in Korea it disturbs me.
Check out the imagery in a display at a Korean Subway station here and here.
Couple this with Japan/China tensions and it is shaping up to be a very interesting century.