'China must put pressure on N. Korea'

U.S . Donald Trump favors China takin greater role in putting maximum pressure on North Korea to curb its nuclear weapons programme, the White House has said, following Beijing's decision to send a special envoy to Pyongyang. Chinese President Xi Jinping's special envoy Song Tao was set to visit North Korea on Friday to inform its leadership about the outcome of the recent Congress of the ruling communist party China.   Mr. Song was expected to convey a message from Mr. Xi to North Korea to join negotiations to halt its nuclear programme. He would also convey the contents of Mr. Xi's discussions with Mr. Trump about North Korea, according to media reports.