China's rare-earth exports to Japan, US plunge after restrictions

Shipments of rare-earth materials from China to Japan and the United States have fallen sharply following Beijing's latest round of export restrictions. The elements are critical inputs ranging from electric-vehicle motors to missile guidance systems.

Analysts say the decline is the latest sign of China's willingness to use its dominant position in the global supply chain as a geopolitical lever. Japanese and American manufacturers have moved to accelerate the search for alternative sources.

Industry groups warn the restrictions could push up production costs in the semiconductor and defense sectors. Governments are speeding up plans to build strategic reserves and domestic processing capacity.