One of the most secretive countries in the world seems to be putting a succession plan into place: North Korean leader Kim Jong Il promoted his youngest son to general. Experts say that could be an indication that Kim Jong Un will succeed his father and his grandfather as leader of North Korea. The outside world knows very little about Kim -- not even his age, which is apparently 27 or 28. But at least one person outside the reclusive communist state once considered Kim Jong Un his best friend. Or at least he thinks so. Joao Micaelo went to school in Switzerland with a boy he knew as Pak Un from 1998 to 2001. A teacher put them together at the same desk when the new student arrived, and they hit it off.