South Korean President Lee Says Will Use Self-Defense Measures in Case of Future North Korean Provocations

Why does one of the mostly read economic blogs like Zero Hedge keep bringing up the topic on North Korea?

From Zero Hedge:

From South Korea's president Lee Myung-bak: "If our territorial waters, airspace or territory are violated, we will immediately exercise our right of self-defense. Under these circumstances, any inter-Korean trade or other cooperative activity is meaningless. I solemnly urge the North Korean authorities to do the following. Apologize immediately to the Republic of Korea and the international community. Immediately punish those who are responsible for and those who are involved in the incident" Is this the last warning before war? While we await North Korea's response, now that the ball is again in its court, we have to score one for the South Korea's communist neighbors who once again have manage to bully it (and the US) into nothing but more posturing.

http://www.zerohedge.com/article/south-korean-president-says-will-use-self-defense-measures-case-new-north-korean-provocation