Are the South Koreans mad?

I watched the news and the South Koreans are adamant about continuing with the live firing drill in Yeonpyeong. Not only that, they are sending balloons with anti Pyongyang leaflets into North Korea.

Why are they so keen to go to war with the North Koreans? Are they insane, or are they being forced to act like mad people, insisting on provoking the North Koreans? Do they know that today’s