The trade war between China and the US has reignited after a truce lasting months - this time over rare earths.
China has a chokehold on the minerals which are used in the making of electric cars, electronics and military weapons. It has tightened its grip over rare earth exports in recent months, and now requires companies in China to get government approval before shipping the minerals abroad.
These curbs have dealt a major blow to the US, whose industries are heavily dependent on imports of the precious metal.
Analysts say China is using its dominance as a key bargaining chip in trade talks with Washington.
But why exactly are rare earths so important and how could they shake up the trade war?
