Video: Three things the execution of Kim Jong-un's uncle says about North Korea North Korea said it had executed Kim Jong-un's uncle Jang Song-thaek as a traitor for trying to seize supreme power, a stunning end for the leader's former mentor, long considered the country's number two official. State media said Jang had been tried and executed for "attempting to overthrow the state by all sorts of intrigues and despicable methods with a wild ambition to grab the supreme power of our party and state." Among the things that The Sunday Telegraph's Chief Foreign Correspondent Colin Freeman said could be learnt from the surprisingly detailed announcement was that looking bored at a party conference was a luxury afforded only to leader Kim Jong-un.