US President Donald Trump has issued a blunt warning to North Korea's leader Kim Jong-un in an address to South Korea's parliament.
He will meet Chinese counterpart Xi Jinping for talks likely to focus on trade and North Korea.
Over the past year North Korea has carried out missile tests in defiance of UN sanctions and in September conducted its sixth and biggest nuclear test.
In an unexpected move, Mr Trump chose to directly address North Korea's leader in his speech, urging him to discard his nuclear programme and weapons.
He also made reference to North Korea's founder and Mr Kim's grandfather, Kim Il-sung, in words likely to inflame Pyongyang.
And the olive branch to Kim Jong-un was the most concrete offer Mr Trump has made yet to the regime.
Earlier on Wednesday, Mr Trump was forced to drop a surprise visit to the demilitarised zone (DMZ) between North and South Korea due to bad weather. »