China's Mineral Squeeze on Japan Explained

China's Mineral Squeeze on Japan Turns Taiwan Row Economic

China's exports of dysprosium, terbium and other critical minerals to Japan collapsed to near zero by May 2026, weaponising supply chains over Takaichi's Taiwan remarks.

Beijing is running a live experiment on Japan: how much economic pain can it inflict on a G7 economy using nothing more than customs paperwork, and how quickly will the target fold? The answer, six months into the squeeze, is that Japan is not folding, and China is escalating anyway — a dynamic that turns a diplomatic row over Prime Minister Sanae Takaichi's November 7 Taiwan remarks into the most consequential critical-minerals confrontation since the 2010 Senkaku crisis, and a live template for how Beijing will treat any US ally that says the wrong thing about Taipei.

Chinese customs data compiled by Kyodo News show that since January 2026, exports to Japan of dysprosium, terbium, yttrium, scandium and molybdenum powder have either stopped or fallen sharply. Rare-earth magnet shipments to Japan dropped roughly 35% in May, per the same data set. Several tungsten items posted zero shipments for three consecutive months; certain gallium products went to zero between January and April; antimonial lead was paused except in February. The Japan Times confirmed that dysprosium and terbium exports to Japan remained at zero in May, extending what is now a five-month drought in the heaviest, hardest-to-substitute rare earths.

The trigger: one sentence in the Diet

The proximate cause is a single answer given in Japan's National Diet on November 7, 2025. Asked what would count as a "survival-threatening situation" for Japan, Takaichi replied that if Chinese "warships are used, accompanied by the exercise of military force," it "could constitute a survival-threatening situation," according to reporting by the BBC and NPR. It was the first time a sitting Japanese prime minister had cited a specific Taiwan scenario as a legal trigger for collective self-defence under Japan's 2015 security legislation.

The Japan Institute of International Affairs argues the substance of Takaichi's remark did not deviate from long-standing government policy. What was new was the explicitness. Beijing seized on it. Consul General Xue Jian wrote on X that "the dirty head that sticks itself in must be cut off," per the BBC. Foreign ministry spokesperson Lin Jian demanded Takaichi "immediately correct and retract" the remarks or "bear all the consequences." She refused, then won a snap election with a roughly 70% approval rating, giving her the political cover to hold the line.

The tool: a purpose-built export-control regime

The retaliation that followed was not improvised. Since 2020, China has built out an Export Control Law framework that, per a SIPRI analysis published this year, gives MOFCOM discretion to license, delay or block dual-use shipments on national-security grounds — including extraterritorial application to foreign firms handling Chinese-origin material.

On January 6, 2026, MOFCOM extended those controls to Japanese military end-users across rare earths, gallium, germanium, graphite, advanced manufacturing equipment and magnets. The Center for Strategic and International Studies called the move a break from precedent because, unlike earlier controls aimed at US trade retaliation, these were "explicitly tied to China's foreign-policy signaling" on Taiwan. On February 25, MOFCOM added 20 Japanese firms to its export control list — Mitsubishi Heavy Industries subsidiaries, Kawasaki Heavy Industries units, Fujitsu — and 20 more to a watchlist including Subaru, ENEOS and Mitsubishi Materials, Al Jazeera reported. On June 29, Beijing imposed further outbound trade limits on 40 more Japanese enterprises and state-run scientific bodies, per Al Jazeera.

The technique is important. MOFCOM has not announced a formal ban on rare-earth exports to Japan. It has instead throttled licensing — the same slow-walking approach it used against US and European firms in 2025, and which the Sasakawa Peace Foundation noted tripled European dysprosium prices to $850 per kilogram within weeks of the April 2025 controls. That gives Beijing plausible deniability while producing effects indistinguishable from an embargo.

The exposure: how deep the dependency runs

Japan is the world's largest rare-earth importer and, in 2024, sourced roughly 63% of its rare-earth metal imports — over 5.2 million kilograms — from China, according to CSIS. Its second-largest supplier, Vietnam at about 32%, in turn depends on Chinese processing. Japan's rare-earth magnet industry, roughly 15% of the global market per CSIS, sits directly downstream of Chinese dysprosium and terbium.

For heavy rare earths — dysprosium and terbium specifically — the concentration is close to absolute. The International Institute for Strategic Studies notes that before the 2010 Senkaku dispute, Japan sourced roughly 90% of its rare earths from China. Even after 15 years of diversification, "China retains considerable cost advantages over most other suppliers."

The downstream damage is already visible. Reuters via Inkl reported Japanese magnet-makers rationing inventories through May. Taiwan's Institute for National Defense and Security Research reported that Sumitomo Electric's tungsten-tool prices had been raised six-fold and that Mitsubishi Materials' June order book showed superhard-material prices roughly three times higher year-on-year. Japanese automakers Nissan and Suzuki had already reported supply disruptions during China's April 2025 controls, with Suzuki temporarily halting Swift production, per CSIS.

The parallel that reframes everything: 2010, but colder

Analysts reaching for the 2010 Senkaku parallel are only half right. The clash then lasted about seven weeks; rare-earth imports from China fell from 2,246 tons in September 2010 to 1,278 tons in October, per Japan's Ministry of Finance data cited by the Sasakawa Peace Foundation. By the following spring, flows had largely resumed. A subsequent CEPR study of UN COMTRADE data from 2010 to 2019 concluded that sustained multi-month disruptions were rare and that China's rhetoric outran its actual selectivity in the decade after.

This time is structurally different in three ways. First, the current curbs have already outlasted the 2010 episode: they are on month six and MOFCOM is escalating, not de-escalating. Second, they operate through a codified Export Control Law and named end-user lists rather than informal customs delays, meaning the legal machinery for a multi-year squeeze is already built. Third, Beijing has embedded the Taiwan issue itself in the justification — a red line Tokyo cannot cross by retracting.

That third point is what makes this a template rather than an episode. As CSIS put it, the message "is not limited to Tokyo: states that voice support for Taiwan or take steps perceived as interference in Beijing's core interests risk exposure to economic retaliation framed as regulatory or commercial action." South Korea, the Netherlands and Australia are watching.

The response: Japan's "de-Chinafication" accelerates

Tokyo's countermove was pre-positioned. Following the 2010 shock, JOGMEC — Japan's state minerals financier — has invested for over a decade in the Lynas rare-earths chain, from Mt. Weld in Western Australia to a heavy-rare-earths refinery in Malaysia that in 2025 became the first outside China to produce dysprosium oxide, per CSIS. In February 2026, the Japan Agency for Marine-Earth Science and Technology successfully retrieved rare-earth-rich mud from about 6,000 metres off Minami-Torishima — the deepest such extraction on record — with METI Minister Yoji Muto's successor, Ryosei Akazawa, calling it "meaningful … from various perspectives, including economic security."

The diplomatic layer moved in parallel. On February 13, Akazawa attended a critical-minerals ministerial hosted by USTR Jamieson Greer that also brought in Australia, Canada, the EU, France, Germany, India, Italy, Mexico, Korea and the UK, per METI. On April 1, Tokyo and Paris signed a bilateral critical-minerals roadmap anchoring the Caremag heavy-rare-earths refinery at Lacq, which METI expects to supply up to 20% of Japanese demand for dysprosium and terbium, according to a March 2025 METI release. The Lowy Institute reports Lynas has extended its supply contract with JOGMEC and Sojitz to 7,200 tonnes of neodymium and praseodymium annually through 2038, while JOGMEC has signed a memorandum with the Brazilian state of Goiás — where the US is separately investing over $500 million.

But the math is unforgiving in the short term. As CSIS noted in May 2026, new US and allied gallium capacity is unlikely to reach full operation before mid-2027. Malaysia's Lynas dysprosium output can plausibly cover perhaps 20–30% of Japanese demand once fully ramped. Minami-Torishima mud is targeted for commercial extraction "around 2030," per IISS. Between now and then, Japan's magnet-makers and defence contractors are running on inventory, scrap-recovered feedstock and whatever licences MOFCOM chooses to grant.

Who benefits, who loses

The immediate winners are non-Chinese heavy-rare-earths projects with production today. Lynas's Malaysia refinery, Caremag in France, MP Materials in the US and the Australia–Brazil corridor Japan is building all become strategically indispensable overnight. Prices support them — European dysprosium ran nearly 289% above Chinese domestic prices after the April 2025 controls, per a Swedish Institute of International Affairs analysis of Chinese customs data. Japanese trading houses Sojitz, Iwatani and Mitsubishi Materials, which spent a decade building these positions, now hold assets worth multiples of book.

The losers extend well beyond Tokyo. Japanese magnet feedstock is embedded in US and European EV, wind and defence supply chains; a squeeze on Japan is a squeeze on Ford, GM and BMW at one remove. Chinese magnet exporters themselves are collateral damage — MOFCOM's licensing bottleneck means legitimate civilian orders are being denied, accelerating exactly the de-Chinafication Beijing is trying to punish. The Sasakawa Peace Foundation captures the paradox: Chinese controls "will only accelerate the technological breakthroughs of adversaries."

Diplomat View

Beijing has miscalculated the political economy of this squeeze in a way that mirrors 2010. The near-term pain on Japan is real — magnet-makers rationing dysprosium, tungsten prices tripling, defence contractors facing production pauses — but the durable consequence is that Takaichi has been handed the political cover to fund Japan's ex-China supply chain at a scale no previous prime minister could have justified. Expect the FY2027 supplementary budget to include a multi-billion-dollar critical-minerals allocation, likely paired with US Defense Production Act Title III coinvestment under the October 2025 bilateral framework. The forecast that would need revision: if MOFCOM quietly resumes dysprosium and terbium licensing in Q3 2026 while maintaining the entity list as diplomatic pressure, Beijing will have signalled that it recognises the escalation is now hurting Chinese exporters and third-country partners more than it hurts Takaichi — and that the extraterritorial license regime cannot substitute for Chinese processing dominance forever. If instead the June 29 escalation is followed by controls on samarium-cobalt magnets or graphite anode material in Q4, treat that as Beijing choosing a multi-year cold war on supply chains and price in a permanent risk premium on Japanese industrial exports.

What to watch

• G7 leaders' meeting (September 2026): Takaichi is expected to press for a border-adjusted price floor mechanism for rare earths — the concept CSIS says was piloted with Malaysia at $110/kg — as a collective response.
• MOFCOM Q3 licensing decisions: whether dysprosium and terbium shipments to Japan resume even at reduced volumes, or whether the near-zero pattern continues into a seventh month.
• Japan FY2027 draft budget (late December 2026): the scale of METI's critical-minerals allocation and JOGMEC recapitalisation will reveal how permanently Tokyo has priced in Chinese coercion.

The Bottom Line

China's mineral squeeze on Japan is not a repeat of 2010 — it is the operational debut of a codified export-control regime built explicitly to punish political speech about Taiwan, and Tokyo's refusal to retract has now converted a diplomatic dispute into the largest state-directed reshoring of critical-mineral supply chains since the Cold War. The countries watching closest are not in Europe; they are in Seoul, Canberra and Manila, calculating what a similar Taiwan remark would cost them.

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