Honest question: don't we (the world, I am a brit) rely on China for rare earth metals for a lot of electronics (presumably including US Military applications)

Honest question: don't we (the world, I am a brit) rely on China for rare earth metals for a lot of electronics (presumably including US Military applications)? I know rare-earth metals aren't that rare and we could ultimately supply them locally but the lack of any open mines or refining setups is just as big a strategic hole as losing domestic Fab isn't it? I am happy to be corrected.