China just cut off the supply of five critical minerals to the U.S.: dysprosium, terbium, tungsten, indium, and yttrium. They are required for jet engines, magnets, computer parts, lasers, and much more - and China controls most of the world's production of each of them
https://cleantechnica.com/2025/04/05/china-just-turned-off-u-s-supplies-of-minerals-critical-for-defense-cleantech/