A handful of Chinese rare earth suppliers have stopped shipping to American customers since early August. No export ban was announced and no licence was formally revoked. The suppliers simply declined the business, out of concern that filling those orders would put them on the wrong side of Beijing. The trigger was China’s decision in early August to sanction the Responsible Business Alliance, the American body behind a widely used supply chain auditing framework.

Chokepoint leverage looks permanent right up to the moment it isn’t. That’s the pattern across a century of resource coercion, and it applies to China’s position in rare earth processing exactly as it applied to everyone who held a similar position before. The mechanics are consistent. A state controls a stage of production that everyone needs and nobody can replace quickly. It uses that control, either openly or through licensing friction.