South Korea's Moon Jae-In leaves for UN General Assembly South Korea's Moon Jae-In heads to New York for the United Nations General Assembly. The trip comes as North Korea tests its southern neighbour, Japan and the US with repeated missile and nuclear launches. US President Donald Trump and Moon have pledged "stronger pressure" on Pyongyang after it defied tough new sanctions with a test that overflew Japan last week and said it wanted to match American nuclear strength. IMAGES