"China is estimated to hold an about 84% share of the global market in neodymium magnets and an over 90% interest in samarium cobalt magnets. Japan, meanwhile, has about 15% of the neodymium magnet market and a less-than-10% share of that for samarium cobalt. If China bans the export of such technologies, it would be difficult for the United States and Europe, which do not traditionally manufacture rare earth magnets…
Tbh from a risk point it astounds me the defence sector over the last 30 years with the oodles of money poured into it have failed so heavily at protecting nation state positions. We have traditionally wealthy stable nations states being crumpled by some trade deals. Lol imagine propping your entire way of life up based on the agreement with your competition thay they will fuel your success and requirements.... Comes across as pure madness from anyone with the slightest hint of risk aversion when you take a step back and look at it.