WHYS 30: Can Korea ever be united?

After the death of Kim Jong-Il, could Korea ever be reunited? The change in leadership in North Korea has led to an inevitable increase in speculation about the future of the two countries - which remain technically at war with each other. Estimates on what reunification might cost range from tens of billions of dollars to more than $1 trillion - equivalent to the South's entire GDP. But it's an emotive issue and something that many are desperate to see - after all, the initial divide split families completely apart from each other, and many have not seen their relatives since that time. So could it ever happen?