President Trump said China's Xi agreed to resume rare earth mineral exports to the U.S. after an April halt, marking progress in trade negotiations between the two countries.

Beijing has approved more export licenses for the critical minerals and magnets in recent days, but supplies remain scarce and factories in the West are running out.

China has signalled for more than 15 years that it was looking to weaponise areas of the global supply chain, a strategy modelled on longstanding American export controls Beijing views as aimed at stalling its rise.