The next generation of air defense isn’t a missile battery. It’s a directed-energy system — a high-powered microwave emitter that fries the electronics of incoming drones and missiles before they reach their targets. The technology works. Prototypes have been tested. Defense contractors have production roadmaps.
There’s one problem. The critical enabling material is gallium. And China controls approximately 98% of world gallium supply.
Gallium is a byproduct of aluminum and zinc smelting. It doesn’t occur in concentrated deposits that can simply be mined — it’s extracted from the waste streams of other metallurgical processes. That makes it structurally dependent on the broader smelting infrastructure, most of which, as Craig Tindale has documented, now sits in China.
The strategic logic here is straightforward and brutal. If China decides that directed-energy weapons represent a threat to its military objectives — say, in a Taiwan scenario — it doesn’t need to attack the factories building those weapons. It simply restricts gallium export licenses. Production stops. The weapons don’t get built. No kinetic action required.
This is the unrestricted warfare doctrine in material form. Japan already experienced a version of it with rare earth supplies during a diplomatic dispute. The lesson wasn’t learned broadly enough.
Gallium isn’t the only example. Tindale’s analysis covers the full spectrum of critical materials used in advanced defense systems: tantalum for Nvidia-class semiconductors that go into targeting and communications systems; tungsten for armor-piercing applications; indium for night-vision and thermal imaging. In each case, the supply chain runs through Chinese-controlled or Chinese-influenced midstream processing.
The Defense Department has funded studies, allocated budgets, and issued strategic assessments of this vulnerability for years. The gap between assessment and remediation remains enormous. Building alternative gallium production capacity requires rebuilding the smelting infrastructure upstream. That’s a decade-plus project, minimum, and it hasn’t started in any serious way.
We are building a 21st century defense posture on a 20th century supply chain that our primary strategic rival controls. That’s not a risk factor. That’s a structural vulnerability.
The Hedge 