What is it about Radical Islam that drives seemingly rational nations to adopt a policy of appeasement at record speed?

In an effort to secure the release of 20 South Korean missionaries being held capitive by the Taleban in the remote regions of Afghanistan, the South Korean government has proven once again that we as a people have learned nothing from history. The government in Seoul has promissed the Islamic Radicals that it will removal all South Korean troops from Afghanistan and will actively work to stop future South Korean missionaries from coming to the war torn country.

The message is clear both to the civilized worl as well as to the world of the Radical Islamist. These terrorists have again learned that their evil deeds will be rewarded and thus the risk to others in Afghanistan has increased. Having been succesfuly in forcing teh Seoul government to capitulate, it is likely the Taleban will try again and they have every reason to belive that they will be successful. Just as they were with Spain and Italy, the Koreans will hold the blood of future terror victims on their hands.

Perhaps we shouldn't be surprised by South Korea's actions, in its dealings with North Korea we have seen a propensity for appeasement unrivaled since the days of the Betrayal at Munich. Who is the South Korean president these days? Neville Kim?
Link to Reuters News Article