After Beijing announced new controls on foreign-made products containing Chinese rare earths, Donald Trump threatened to impose an additional 100% tariff as soon as November 1.

After tightening restrictions during the tariff tit-for-tat in April, China has further amped up controls on the minerals, which are essential for the tech and auto industries.…

Stock markets dropped on Trump's bellicose Truth Social post that said China is "becoming very hostile" in seeking tough export controls on rare earths.