It’s hard to know if Trump's comments on Xi Jinping suggest the world’s two biggest economies are getting any closer to a deal on tariffs.

President Donald Trump has vented his frustration with China's President Xi Jinping, as the trade conflict flares again, despite an agreement in Geneva to slash tariffs and work constructively to resolve key differences.

President Trump went after Xi Jinping on social media as China's commerce ministry went to the World Trade Organization in response to unilateral tariffs.