China views its rare earths as a national security issue, not a trade one, and that’s why Beijing is unlikely to loosen controls anytime soon, experts say.

China tightens its grip on global rare earth supply by curbing exports of key minerals, raising alarms among automakers and defence sectors worldwide

Global manufacturers have raised the alarm on China's decision to curb exports of rare earths alloys, mixtures and magnets. Here is an overview of rare earths and China's measures: WHAT ARE THEY? Rare earths are a group of 17 silvery-white elements.