China has halted exports of key rare earth elements to Japan for four months, leveraging its dominance in critical minerals as a diplomatic tool and forcing a global scramble for alternative supplies. The move, which mirrors a similar 2010 incident and more recent pressure on the U.S., is accelerating a strategic realignment as nations seek to break their dependency on Beijing for materials essential to defense, technology, and the green energy transition.
"Brazil has 'no vetoes and no preferences' for foreign partners," President Luiz Inácio Lula da Silva said recently, but insisted that all processing and refining must happen on Brazilian soil, explicitly rejecting the historical model of simply exporting raw materials.
Since December, Chinese customs data shows that exports of heavy rare earths like dysprosium and terbium to Japan have ceased, following a diplomatic dispute over Taiwan. This has forced major Japanese magnet maker Shin-Etsu to stop accepting some new orders. In response, the U.S. is backing its only major domestic producer, MP Materials (NYSE: MP), which saw its stock surge 223% last year, while Brazil is promoting its own vast reserves with a new ~$1 billion tax credit program.
The strategic standoff underscores China's near-monopoly on processing, a grip tighter than OPEC's on oil, forcing nations to choose between high-cost, long-term investments in domestic supply chains or continued dependence on Beijing for materials vital to defense, technology, and green energy sectors.
Japan Feels the Squeeze
The cutoff of Chinese rare earths has put Japanese industry in a precarious position. Since the halt began, which coincided with a diplomatic row over Taiwan in November, Chinese exports of dysprosium, terbium, yttrium oxide, and the critical chip-making metal gallium have all but stopped. This is a repeat of a 2010 showdown that prompted Japan to build stockpiles and design away from heavy rare earths, but its dependence remains significant.
While Japan's Trade Minister Ryosei Akazawa is in China for meetings, major conglomerates like Mitsubishi Heavy Industries have been put on an export control list. The Japanese government has acknowledged concerns over rising prices and is releasing stockpiled supplies where necessary. However, replacing Chinese supply is a long-term challenge. Australia's Lynas Rare Earths, a non-Chinese producer funded in part by Japan, produced just 8 metric tons of dysprosium and terbium in the first quarter of 2026. In 2024, China exported about 14 tons of the two minerals to Japan every month.
Brazil's Resource Nationalism
As China flexes its muscles, other resource-rich nations are seizing the opportunity to set new terms. Brazilian President Lula has made it clear that the country's vast subsoil resources, including the world's second-largest rare-earth reserves, will be used to drive domestic industrialization.
Lula's government has outlined a framework for foreign partnerships that welcomes investment from the U.S., China, and Europe with one major condition: all processing and refining must be done in Brazil. "Brazil refuses to repeat historical extraction cycles where raw materials are simply shipped abroad," Lula stated, a message he conveyed directly to the Trump administration during recent discussions on critical minerals. To back this policy, Brazil's lower house passed the National Policy on Critical and Strategic Minerals (PNMCE), creating a ~$2 billion guarantee fund and ~$1 billion in tax credits to boost domestic processing.
The American Counter-Play
The United States is pursuing a parallel strategy focused on onshoring its own supply chain. The effort centers on MP Materials (NYSE: MP), which operates the Mountain Pass mine in California, the only major rare-earth facility in the country. The company has secured agreements with the Department of Defense and is building a magnet factory in Texas to complement its mining operations.
Despite its strategic importance, MP's stock has been flat in 2026 after a monster 223% gain last year. The market appears uncertain, weighing the company's central role in U.S. resource independence against its sky-high valuation of 37 times sales and over 450 times forward earnings. The situation is further complicated by a recent fact sheet from President Trump's visit to Beijing, which suggests a potential deal for China to resume rare-earth exports to the U.S. This creates a conflicting signal for investors betting on a complete decoupling from Chinese supply.
This article is for informational purposes only and does not constitute investment advice.
