North Korea video marks leader Kim Jong-un's 'birthday'
A documentary praising the military expertise of North Korea's new leader's Kim Jong-un has aired on what is believed to be his birthday.
The film shows Kim Jong-un in his new role as supreme military commander, inspecting troops, saluting and sitting in a tank.
It also confirms that he was being groomed for the role from 2009, showing footage of him from that time watching a rocket launch with his father.
Lucy Williamson reports from Seoul.