China's Xi Jinping and Kim Jong Un meet ahead of Donald Trump summit

Kim Jong Un (left) with Xi Jinping in Dalian. Pic/AFP

Chinese President Xi Jinping and Kim Jong Un met in China yesterday in an unannounced visit by the North Korean leader ahead of an expected summit with US President Donald Trump.

Shortly after the meeting was made public, Trump tweeted that he would speak to his "friend" Xi about North Korea yesterday. It was Kim's second visit to China since March, highlighting efforts by the Cold War-era allies to mend ties that have chilled.