keywords: nukes nuclear korea diplomat beijing
text: Diplomat: Nukes Not Cause of Korea Blast BEIJING - A diplomat who visited the site of a huge explosion in North Korea said Friday he saw no evidence it was caused by a nuclear test, and South Korean officials said mushroom-shaped plume thought to be from the blast may have instead been a natural cloud formation.    The extremely secretive North allowed diplomats from seven countries to the site to prove its contention that the Sept...