China has secured a virtual monopoly over gallium, a critical mineral used to produce microchips in advanced military technologies. Failing to de-risk gallium supply chains could have serious security and economic consequences for the United States and its allies.
It's kind of hilarious how US has been trying to find all kinds of ways to screw China over economically, and China just flexes by restricting a couple of items surgically causing panic in US. It's such an elegant way to let Americans know that China can fuck over their whole economy overnight.