Korea teams unite for Winter Olympics

North and South Korea agree to field a joint women's ice-hockey team at the Winter Olympics. Andy Murray, a former National Hockey League head coach, explains what this means to his daughter Sarah - who happens to be the coach of the South Korea women's ice-hockey team.

Picture: North and South Korean ice hockey players after a game in Gangneung, South Korea in April 2017. Credit: Kyodo News/Getty Images.