Mike Pence to use Olympics to push tougher stance on North Korea

US vice president Mike Pence is using his appearance at the Winter Olympics to call on the international community to get tougher on North Korea's nuclear ambitions and human rights abuses.

Mr Pence is in Pyeongchang to cheer on American athletes, but he is also warning the world against falling for the glossy image of the two Koreas as they march in the opening ceremony under one flag.