The White House says Beijing contacted it about Kim's visit. A personal letter from Chinese President Xi Jinping was delivered to US President Donald Trump. Trump tweeted to say there is a "good chance" that Kim Jong Un will move towards peace.
Japanese Prime Minister Shinzo Abe told parliament he's closely watching Kim's visit - with extreme interest. But he repeated trade embargoes will not be lifted without concrete action from Pyongyang.
Russia welcomed the meeting between President Xi and Kim Jong Un, saying it was an important step to strengthen positive changes on the Korean Peninsula.