Oil prices slipped on Friday but were on track for their first weekly gain in three weeks after U.S. President Donald Trump and China's Xi Jinping resumed trade talks, raising hopes for growth and stronger demand in the world's two largest economies.

Mr. Trump said in a post on Truth Social that his call with Xi Jinping, China’s top leader, had focused entirely on the trade relationship between the nations, which has soured in recent months in a dispute over the export of critical minerals used in an array of industries.