Rare earth minerals

Having sold off so much of the US strategic critical mineral reserves, the US now depends on China for rare earth minerals, which are crucial for everything in the US military from F-35 fighter jets, missiles, and tanks to mobile phones and radio communication.

The rare earths dependency on China stems in part from the fact that extracting rare earth minerals is an extremely polluting process that China has been willing to undertake, while most other countries have not, including the US, which ironically prides itself on having strict environmental regulations in place."

How the US Squandered Its Strategic Minerals :: Gatestone Institute