US-Korea Talks: Trump, Abe vow to keep pressure on North Korea

US President Donald Trump says he hopes his meeting with North Korea's leader, Kim Jong-un, will be a success - but he will walk out if it's not. Speaking at a joint press conference with Japanese Prime Minister Shinzo Abe, the two leaders vowed to keep maximum pressure on Pyongyang ahead of a series of summits aimed at encouraging the North to abandon its nuclear weapons programme. Steve Mort reports.