As a part of its commerce conflict with the US, China has threatened to limit exports of uncommon earths. These obscure minerals, on which the army and tech industries rely, are overwhelmingly produced in China. Katie Martin discusses how the world got here to be so depending on one nation for such a vital a part of the economic provide chain with Lucy Hornby and Henry Sanderson.
Contributors: Josh Noble, weekend information editor, Katie Martin, capital markets editor, Henry Sanderson, commodities correspondent, and Lucy Hornby, deputy Beijing bureau chief. Producer: Fiona Symon