Life after Kim Jong-il: What next for North Korea?

As North Korea enters ten days of national mourning for its former leader Kim Jong-il, international leaders are watching closely to see how the transition of power to his son Kim Jong-un will play out.

The United States, Japan and South Korea have put on a united front, agreeing to jointly monitor the situation amid concerns over how the economically challenged, heavily armed North Korea will progress under an inexperienced and untested new leader.

Lucy Williamson reports from Seoul.