Trump ended his two-day visit by declaring that he had reached “fantastic trade deals” with President Xi Jinping, saying the understandings would benefit both economies. The commercial package pointed to tariff discussions, agricultural market access, aviation purchases and new bilateral boards for trade and investment. Yet the absence of detailed, enforceable commitments on rare earths and permanent magnets has left a sensitive gap in the outcome.
At the centre of the concern is China’s dominance over heavy rare earths and high-performance magnets used in precision-guided missiles, fighter jets, drones, radar systems, submarines, electric motors and communications equipment. Beijing eased some wider trade tensions around the summit but left in place earlier controls covering key materials such as dysprosium, terbium and yttrium, all of which are difficult to replace quickly in advanced defence manufacturing.
The issue has become more urgent because China’s export-licensing system gives Beijing a practical lever over global industrial production. Overall rare-earth exports have shown signs of recovery, but heavy rare earth flows remain constrained. Some allied manufacturers have faced severe shortages, with shipments of certain materials to Japan and Germany falling sharply from previous levels. Prices for some controlled inputs have surged, complicating procurement plans across aerospace, automotive and electronics supply chains.
US officials have presented the Beijing trip as a step towards stabilising a relationship battered by tariffs, technology restrictions and security disputes. China’s side has described the understandings as preliminary, signalling that many details still require further negotiation. That difference in tone has sharpened questions over whether the summit produced a durable thaw or merely postponed a deeper confrontation over industrial leverage.
For the Pentagon, the central problem is not only whether China resumes larger shipments. It is whether Washington can rely on a rival power for components embedded across its defence industrial base. The US has expanded funding for domestic critical-minerals projects and taken a direct stake in MP Materials, the operator of the Mountain Pass mine in California, as part of a wider push to build mining, separation, processing and magnet-making capacity at home. Even with those steps, creating a full alternative supply chain is expected to take years.
China’s advantage was built over decades through low-cost processing, state-backed industrial policy and control over specialised refining. The US has mining assets, allied suppliers and growing private-sector investment, but it remains weak in the midstream stages that turn ore into usable oxides, metals and magnets. This gap is especially acute for heavy rare earths, where viable non-Chinese processing capacity is limited.
The timing of Trump’s Beijing diplomacy has therefore created a split-screen picture. On one side, the White House can point to reopened agricultural channels, prospective Boeing aircraft sales and mechanisms for continued tariff talks. On the other, defence planners see a rival retaining control over materials that underpin high-end military capability. That imbalance explains why the summit’s trade language has not eased concern across the national security bureaucracy.
Taiwan added another layer of tension. Trump’s comments suggesting that arms sales to Taipei could be treated as a negotiating factor unsettled security analysts and raised doubts among partners that depend on US commitments. Xi’s warning over Taiwan underscored Beijing’s readiness to link economic diplomacy with core security demands. For Washington’s allies in Asia, the combination of supply-chain dependence and transactional rhetoric has revived concerns about long-term strategic clarity.
China’s rare-earth policy is framed by Beijing as a matter of national security and export discipline. In practice, it has become one of the most effective tools in the trade conflict. Unlike tariffs, which impose broad economic costs, export controls can target specific chokepoints. That makes them difficult to counter quickly and gives Beijing leverage without a full commercial rupture.
The US response is moving on multiple tracks. Federal agencies are backing domestic mines and magnet plants, defence contractors are reviewing supplier exposure, and allied governments are seeking alternative projects in Australia, Canada, Japan and Europe. Recycling and recovery from electronic waste are also gaining attention, though these sources cannot replace large-scale mining and refining in the near term.
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