Whatever happened to the rare earths weapon? Critical materials and international security in Asia

ABSTRACT In 2008, rare earth minerals (REMs) shot to the top of the international agenda. When China began restricting exports of these critical materials, many claimed it was threatening a “REMs weapon” against the US and Japan. Yet by 2014, the crisis had quickly abated, as China shelved its policies in the face of pressure from consumer governments. This article examines why REMs emerged – and then quickly disappeared – as a threat to international security in Asia. It first conceptualizes the geopolitics of critical materials, before analyzing the politics of the REMs crisis between Japan, China, and the US. It argues that China’s ability to use REMs for diplomatic coercion was inherently weak and is unlikely to pose a similar threat to international security in future years.