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Analysis of China's Intensified Rare Earth Export Controls Against Japan Following Remarks by Sanae Takaichi and Its Strategic Implications
Overall Summary
Executive Summary
In November 2025, following Sanae Takaichi, Japan's then-Prime Minister, publicly stating that a Chinese military operation against Taiwan would constitute a "situation threatening Japan's existence," China perceived this as the end of decades of strategic ambiguity and a direct challenge to its core interests. Consequently, China systematically began implementing comprehensive retaliatory measures, including intensified rare earth export controls, travel restrictions, and the suspension of cultural exchanges. China is deliberately weaponizing its structural dominance in global rare earth mining and primary refining processes, not merely as an economic resource but as a strategic leverage. Furthermore, China is strategically stockpiling global rare earth resources for the long term by increasing imports from friendly nations like North Korea and Myanmar by over 60%, indicating that these resources are being managed as a sustained strategic asset rather than a temporary pressure tool. Notably, these export controls are not confined to the military and defense sectors but have expanded to encompass civilian high-tech industries such as electric vehicles and semiconductors. The detention of Japanese nationals in May 2026 confirmed that these regulations have moved beyond the declarative stage into practical enforcement. The dynamics of this Sino-Japanese rare earth conflict have direct implications for South Korea, which is highly dependent on rare earths, and should be recognized as a significant warning signal demonstrating that resource weaponization by China can materialize into immediate and comprehensive supply chain shocks triggered by a single diplomatic or security statement.
Step 1: Issue Situation Analysis
China's Intensified Rare Earth Export Controls Against Japan Following Remarks by Prime Minister Takaichi on Taiwan Contingency
Issue Situation Analysis
1. Background and Progress of the Issue
Structural Background: China's Dominance in Rare Earths
To understand the current Sino-Japanese rare earth conflict, it is essential to first grasp China's structural position in the global rare earth supply chain. Rare earths are indispensable materials for a wide range of modern high-tech industries, including electric vehicles, semiconductors, wind turbines, and advanced defense equipment. China holds an overwhelming share of the global market in mining and primary refining processes for these materials [1]. Rare earths, along with rare metals, play a crucial role in enhancing the performance of high-tech products, and China has managed them as strategic assets rather than mere economic resources [9]. Moreover, China is actively stockpiling global rare earth resources by restricting exports from its own country while simultaneously increasing imports from friendly nations such as North Korea and Myanmar by over 60% [13]. This demonstrates China's strategic intent to utilize rare earths as a geopolitical pressure tool.
Trigger: Prime Minister Takaichi's Remarks on Taiwan Contingency
The immediate trigger for this conflict was Prime Minister Sanae Takaichi's remarks on November 7, 2025, during a parliamentary session, where she alluded to the possibility of Japanese military intervention in a Chinese scenario of invading Taiwan [3]. By explicitly stating that a Chinese military operation against Taiwan could become a "situation threatening Japan's existence" [15], Prime Minister Takaichi publicly signaled a shift in Japan's security policy from its traditional strategic ambiguity towards a more defined direction. Beijing strongly reacted to these remarks and immediately initiated multifaceted retaliatory measures. China systematically began implementing a wide range of retaliatory actions, including travel restrictions to Japan, suspension of performances by Japanese artists in China, and intensified rare earth export controls crucial for Japan's high-tech industries [6].
Progress: Gradual Intensification of Controls
China's rare earth export controls against Japan are not a one-off measure but show a pattern of gradual and systematic intensification. Following the initial controls implemented immediately after Prime Minister Takaichi's remarks in November 2025, export regulations on rare earths and dual-use items were significantly tightened again in January 2026 [5][6]. This tightening of regulations has expanded beyond rare earths to encompass dual-use items in general and has been accompanied by a comprehensive reduction in bilateral relations, including trade and cultural exchanges, indicating that China's pressure on Japan is comprehensive and strategic in nature [5].
2. Current Situation (Latest Developments)
Detention of Japanese Nationals and Realization of Regulatory Enforcement
In May 2026, a significant event occurred that demonstrated China's rare earth export controls had moved beyond mere regulatory declarations into practical enforcement. Two Japanese nationals, including an employee of a local subsidiary of a major Japanese electronics manufacturer, were detained by Chinese authorities in Dalian, Liaoning Province, on May 18 and 25, respectively, on charges of violating China's anti-smuggling laws [2][4][8]. Chief Cabinet Secretary Minoru Kihara officially confirmed this on June 24 [1][8], and the incident further exacerbated relations between the two Asian economic giants [2].
Introduction of a Reward System for Reporting: Institutionalization of the Control System
Following the detention of Japanese nationals, China's Ministry of Commerce announced additional measures to further strengthen the enforcement of export controls on rare earths and strategic minerals. These measures, effective July 1, 2026, aim to establish a whistleblower channel allowing companies and individuals to report suspected violations of export controls, and introduce a reward system for confirmed reports [7][11]. Concurrently, penalties for violations have been intensified. This clearly demonstrates China's intention to solidify rare earth export controls not merely as a diplomatic pressure tool, but as a systematic and sustainable institutional framework. Furthermore, by establishing a system for constant monitoring of its own export control compliance through internal surveillance networks, China is creating an environment where global companies will find it difficult to circumvent Chinese regulations.
Entrenchment of Diplomatic Stalemate
Sino-Japanese relations are currently in a state of overall stalemate. Since Prime Minister Takaichi's remarks in November 2025, bilateral relations have continued to deteriorate without any signs of normalization [3]. Even if Prime Minister Takaichi and President Xi Jinping attend the APEC summit scheduled for November 2026, the possibility of substantive bilateral talks is considered very low [3]. The prevailing forecast is that significant changes in Sino-Japanese relations are unlikely before the personnel reshuffle following the National Congress of the Communist Party of China in the fall of 2027 [3]. However, some analysts suggest that China is showing signs of partially reopening business channels even while political relations remain frozen [6], indicating a dual approach that separates economics from diplomacy.
3. Key Actors and Their Positions and Interests
China: Utilizing Rare Earths as Geopolitical Leverage
China's core interest lies in leveraging its dominance over rare earth strategic resources as a coercive tool to achieve its diplomatic and security objectives. Beijing perceives Prime Minister Takaichi's remarks as a direct challenge to its core interest in the Taiwan issue and is employing a strategy that precisely targets Japan's most vulnerable point of supply chain dependency. By extending rare earth export controls beyond the military and defense sectors to encompass Japan's entire electronics and high-tech industries, China aims to maximize economic pain and pressure Japan to reverse its security policy. Furthermore, institutionalization measures such as the introduction of the reward system for reporting are interpreted as an expression of China's intent to operate these export controls as a long-term strategic tool rather than a temporary retaliatory measure [7][11].
Japan: Dilemma Between Security Principles and Economic Vulnerability
Japan faces a complex situation requiring it to simultaneously address the maintenance of its security principles and the mitigation of its economic vulnerabilities. The Takaichi administration maintains its strategic judgment that Japan's security interests are directly linked to Taiwan contingencies [15], while also making all-out efforts to diversify its supply chain to minimize damage to its high-tech industries caused by rare earth supply disruptions. The Japanese government has announced a large-scale economic strategy involving public-private joint investments of 370 trillion yen by fiscal year 2040 in 17 strategic sectors, including AI, semiconductors, shipbuilding, defense, and biotechnology [10][14]. A key objective of this strategy is to secure strategic autonomy, including reducing reliance on rare earths. Japan is also actively pursuing cooperation to secure non-Chinese sources, including joint investment in rare earth recycling projects with France [8], and is developing its diplomatic response by strengthening economic security alliances with middle powers.
Japanese Companies: Frontline of Regulatory Uncertainty and Personnel Risks
Japanese companies are the actors who must bear the most direct and immediate damage in this conflict. The fact that at least one of the two Japanese nationals detained in Dalian was an employee of a local subsidiary of a major Japanese electronics manufacturer [8] highlights the harsh reality that Japanese companies operating in China now face the risk of personal safety threats to their employees involved in rare earth-related business. Companies are facing triple pressure: increased costs due to supply chain restructuring, difficulties in business planning due to regulatory uncertainty, and legal risks for their employees in China.
France and Western Middle Powers: Emerging as New Cooperation Partners
France and other Western middle powers are seizing opportunities to link Japan's demand for supply chain diversification with their own strategic interests. Cooperation in economic security between Japan and France, including joint investments in rare earth recycling projects, is rapidly expanding [8]. This aligns with the trend of middle powers building independent economic security alliances amidst the strengthening nationalist tendencies in Washington.
4. Summary of Key Issues
Issue 1: Scope of Rare Earth Controls — Comprehensive Economic Pressure Beyond Military and Defense
One of the most significant features of this situation is that China's rare earth export controls are not limited to the military and defense sectors but are targeting Japan's entire civilian high-tech industry. The expansion of regulations on dual-use items [6][11] and the detention of electronics company employees [1][4] suggest that China is using rare earths as a tool for broad pressure on the entire Japanese economy, extending beyond specific security sectors. This implies that the rare earth controls are not merely a trade dispute but a geopolitical coercion strategy aimed at destabilizing Japan's economic foundation itself.
Issue 2: Institutionalization of Export Controls — From Temporary Retaliation to Structural Weaponization
The fact that China is systematically institutionalizing rare earth export controls, such as by introducing a reward system for reporting and strengthening penalties for violations [7][11], strongly suggests that these measures are not temporary retaliations that can be resolved in the short term through diplomatic negotiations. China's move towards institutionalizing rare earths as a long-term and sustainable geopolitical leverage implies that rare earth-dependent countries, including Japan, must approach supply chain diversification not as a short-term task but as a long-term structural transformation issue.
Issue 3: Sustainability of Diplomatic Stalemate and Economic Separation
The fact that China is adopting a dual approach of partially maintaining business channels while keeping political relations frozen [6] further complicates the trajectory of bilateral relations. However, as long as coercive measures such as the detention of individuals continue, it remains uncertain whether economic and diplomatic separation can be practically maintained. The forecast that normalization of relations is unlikely before the personnel reshuffle of the Communist Party of China in 2027 [3] means that Japanese companies will have to operate under a high degree of uncertainty for a considerable period.
Issue 4: Feasibility and Time Lag of Supply Chain Diversification
Although Japan is actively pursuing supply chain diversification through measures such as cooperation with France on rare earth recycling [8] and its 370 trillion yen strategic investment plan [10][14], there are practical limitations, as developing new sources and securing alternative technologies require significant time and cost. The key issue emerging is the duration of the time lag between the speed at which China is intensifying export controls and the speed at which Japan is diversifying its supply chain, and the level of economic cost that Japanese high-tech industries will have to bear during that period.
Step 2: In-depth Issue Analysis
China's Intensified Rare Earth Export Controls Against Japan Following Remarks by Prime Minister Takaichi on Taiwan Contingency
In-depth Issue Analysis
1. Analysis of the Root Causes of the Issue
Clash of Geopolitical Red Lines
The most fundamental cause of the current Sino-Japanese rare earth conflict lies in the direct clash of the two countries' strategic red lines concerning the Taiwan issue. Prime Minister Takaichi's remarks in November 2025 should be interpreted not as a mere diplomatic gaffe but as an event that publicly declared a structural shift in Japan's security policy. When Prime Minister Takaichi defined China's military operation against Taiwan as a "situation threatening Japan's existence" [15], it was the first time Japan explicitly stated that it could act as a party involved, rather than a bystander, in a Taiwan contingency. From Beijing's perspective, this signified the end of decades of strategic ambiguity and was inevitably perceived as a direct challenge to the Taiwan issue, which China defines as its core interest.
China's response, which escalated immediately from diplomatic protest to economic coercion, demonstrates that Beijing recognized these remarks not as mere rhetoric but as a signal of a shift in Japan's strategic direction. The choice of rare earth export controls as a tool is particularly significant. China has explicitly recognized and managed rare earths as strategic assets, not just commodities [9], and their use as leverage for geopolitical pressure was already an established policy pattern. Prime Minister Takaichi's remarks provided China with sufficient political justification to fully activate this leverage.
Intentional Exploitation of Structural Asymmetry
The second fundamental cause of the issue is China's intentional weaponization of its structural asymmetry in the rare earth supply chain. China dominates an overwhelming share of global rare earth mining and primary refining processes [1], a structural dominance that cannot be easily overcome in the short term. This is because constructing refining facilities and accumulating technology takes years to decades and requires substantial capital investment. China is fully aware of this structural advantage and is strategically stockpiling global rare earth resources by restricting exports from its own country while simultaneously increasing imports from friendly nations such as North Korea and Myanmar by over 60% [13]. This is decisive evidence that China is operating the weaponization of rare earths as a long-term strategic asset, not a temporary pressure tool.
Japan's high-tech industrial structure further exacerbates this asymmetry. Japan's key export industries, such as electric vehicles, semiconductors, and defense equipment, cannot function without rare earths [1], and this dependency is deeply embedded in a supply chain structure formed over decades. China is precisely targeting this vulnerability to exert pressure.
Expansion of Regulatory Scope: Comprehensive Control Beyond Military Sectors
A particularly noteworthy fundamental characteristic of this conflict is the expansion of China's rare earth controls beyond the military and defense sectors to encompass civilian high-tech industries. The intensified export regulations on dual-use items [6][11] intentionally blur the lines between military and civilian use, effectively creating pressure on Japan's entire high-tech industry. This suggests that China's economic coercion against Japan is not a surgical strike targeting specific industrial sectors but is intended as structural pressure on the Japanese economy as a whole. This comprehensive control strategy forces Japan to reconsider its security policy direction while simultaneously creating a dual pressure that compels Japanese companies to choose between access to the Chinese market and supply chain stability.
2. Structural Context
Political Structure: The Link Between China's Domestic Politics and Foreign Coercion
To understand China's control over rare earths towards Japan, it is necessary to grasp its connection with China's domestic political structure. With personnel changes scheduled for the Chinese Communist Party's National Congress in the fall of 2027 [3], the Xi Jinping leadership is acutely aware of the domestic political imperative to maintain a hardline stance on the Taiwan issue. The immediate and strong retaliation against Takaichi's remarks aligns with this domestic political necessity. A structural pressure is at play, compelling Beijing to simultaneously signal to both domestic and international audiences that it will not tolerate any external challenges regarding Taiwan.
Concurrently, the low probability of a bilateral meeting between Prime Minister Takaichi and President Xi Jinping at the APEC Summit scheduled for November 2026 [3] indicates that the resolution of this conflict is unlikely to be short-term. A structural constraint exists, making fundamental changes in Japan-China relations unlikely before the fall of 2027, when the Chinese Communist Party's National Congress concludes [3], implying that rare earth controls will persist for a considerable period.
Economic Structure: Asymmetry in Interdependence
While the Sino-Japanese economic relationship is superficially interdependent, its internal structure is severely asymmetrical. Japan exhibits a high degree of dependence on China for rare earth supplies, whereas China's export controls towards Japan entail certain costs for its own economy. However, China judges that it possesses both the willingness and the capacity to bear these costs, and is instead pursuing strategic interests by enhancing the added value of its domestic rare earth industry and strengthening its dominance in the global supply chain through export restrictions. China's actions of significantly increasing imports from friendly nations while suppressing rare earth exports [13] clearly demonstrate this strategic calculation. In essence, China is employing a dual strategy: consolidating its control over the bottleneck of global rare earth supply and leveraging this control for geopolitical objectives.
Meanwhile, the Takaichi administration in Japan has announced plans for public-private investment totaling 370 trillion yen by fiscal year 2040 in 17 strategic sectors, including AI, semiconductors, shipbuilding, defense, and biotechnology [10][14]. This signifies that strengthening economic security, including reducing reliance on rare earths, has become a core national strategy for Japan, paradoxically accelerating Japan's pursuit of strategic autonomy due to China's economic coercion.
Security Structure: The Securitization of Economic Coercion
The most notable structural change in this conflict is the phenomenon of 'securitization of economic coercion,' where economic means are directly mobilized for security objectives. China's rare earth export controls are not merely a trade dispute but function as explicit geopolitical tools aimed at influencing Japan's security policy direction. The tightening of controls on dual-use items [11] strategically blurs the lines between the civilian economy and military capabilities, aiming to directly constrain Japan's defense industry capacity. This signifies China's full-scale deployment of a 'weaponized interdependence' strategy against Japan, transforming economic interdependence into a security leverage.
3. Comparison with Historical Precedents and Similar Cases
The 2010 Sino-Japanese Senkaku Collision and Rare Earth Embargo
The most directly comparable historical precedent to the current situation is China's restriction of rare earth exports to Japan during the 2010 Senkaku (Diaoyu Islands) dispute. At that time, China virtually halted rare earth exports to Japan in retaliation for the arrest of a Chinese fishing boat captain by the Japan Coast Guard in the Senkaku waters. This incident marked the first time China explicitly demonstrated to the international community its willingness and capacity to use rare earths as a geopolitical pressure tool, subsequently triggering discussions on diversifying rare earth supply chains among Japan and Western countries.
However, significant differences exist between the 2010 case and the current situation. The 2010 measure was largely a short-term retaliation for a specific diplomatic incident and was eased relatively quickly. In contrast, the current regulations show a pattern of phased and systematic strengthening, beginning in November 2025, followed by reinforcement in January 2026, the detention of a Japanese national in May, and the establishment of a reward system for reporting violations in July [2][7][11]. This suggests that the current measures are designed as a structural pressure strategy rather than a temporary retaliation. Furthermore, the enforcement mechanism of the controls was weak in 2010, whereas the establishment of a systematic enforcement system, such as the reward system, indicates a qualitative shift to a different stage [7].
Comparison with China's Rare Earth Controls Towards the United States
China has also utilized rare earths as a strategic leverage during the US-China trade conflict. In response to US export controls on semiconductors to China, Beijing intensified export controls on key rare earth-related companies, including American firms [12]. This case illustrates that China employs rare earth weaponization not as a tactic confined to a specific country, but as a strategic tool consistently applied across geopolitical conflicts.
A notable point when comparing the US and Japanese cases is the nature and intensity of the pressure. While controls towards the US primarily took the form of surgical measures targeting specific companies and technological sectors, the controls towards Japan are comprehensive, encompassing dual-use items, culture, and human exchanges [5][6]. This reflects China's perception of Japan's security policy shift concerning Taiwan as a more direct threat than the US-China technology hegemony competition.
Structural Similarity with Russia's Weaponization of Energy
China's weaponization of rare earths shares structural similarities with Russia's use of natural gas as geopolitical leverage against Europe. Since the 2000s, Russia has repeatedly used gas supply disruptions or price hikes as a pressure tool during diplomatic conflicts with Ukraine and Europe, and significantly reduced gas supplies to Europe following its invasion of Ukraine in 2022. This case is a typical example demonstrating how resource dependency can transform into geopolitical vulnerability, sharing the same logical structure as China's rare earth strategy.
Just as Russia's weaponization of energy accelerated Europe's diversification of energy supply chains and led to a strategic re-evaluation of dependence on Russian energy as a risk, China's weaponization of rare earths is prompting Japan and Western countries to view rare earth supply chain diversification not as an economic efficiency but as a security imperative. However, unlike Russia's energy weaponization, China's dominance in rare earths offers a structurally stronger leverage, as developing alternative sources requires significantly more time and higher technological barriers.
4. Key Variables in Issue Development
Variable 1: Expansion of China's Regulatory Enforcement Intensity and Scope
The most critical variable in the future development of this issue is the extent to which China will expand the enforcement intensity and scope of its rare earth export controls. Currently, China is systematically strengthening the practical enforcement of its regulations through measures such as the establishment of a reward system for reporting violations [7], the detention of Japanese employees [2][4], and the tightening of controls on dual-use items [11]. If these measures are extended to Japanese companies' subsidiaries in China across the board, the very operation of Japanese businesses in China will be fundamentally threatened. Conversely, if China balances pressure and conciliation by moderating the intensity of regulations while signaling a partial reopening of business channels [6], the conflict may persist at a manageable level.
Variable 2: Speed and Success of Japan's Supply Chain Diversification
The second key variable is how quickly and effectively Japan can achieve diversification of its rare earth supply chain. Japan is actively pursuing supply chain diversification through initiatives such as joint investment in rare earth recycling projects with France [8] and its public-private strategic investment plan worth 370 trillion yen [10][14]. However, establishing rare earth refining technology and facilities requires considerable time. Moreover, China's preemptive stockpiling of global rare earth resources [13] acts as a structural constraint, making it difficult for Japan's diversification efforts to yield substantial results in the short term. The core of this variable lies in whether the speed of diversification can keep pace with the speed of China's regulatory tightening.
Variable 3: China's Domestic Political Schedule and Leadership's Strategic Calculations
The third key variable is the strategic calculations of the Chinese leadership in the lead-up to the Chinese Communist Party's National Congress in the fall of 2027. The prospect that fundamental changes in Japan-China relations are unlikely before the completion of personnel changes [3] suggests that rare earth controls may continue until at least the end of 2027. However, if downward pressure on the Chinese economy intensifies, or if the damage to China's own industries from rare earth controls exceeds expectations, the leadership may revise its strategic calculations and implement some easing measures.
Variable 4: Response and Level of Solidarity from the United States and Allies
Finally, the level of solidarity and support that the United States, Europe, and other allies provide to Japan's rare earth supply chain diversification efforts will be a significant variable. The cooperation between Japan and France on rare earth recycling [8] can be seen as an early signal of such solidarity. However, given the US's tendency towards prioritizing its own interests [8], it remains uncertain whether supply chain cooperation among allies can develop into a substantial level. The stronger the solidarity among allies, the weaker China's rare earth leverage will become; conversely, if allies pursue a path of individual self-reliance, China's strategic advantage will be further solidified.
References
[1] [Nikkei Asia] China detains 2 Japanese over alleged rare-earth export control breach
[2] [Daily Maverick] China detains two Japanese nationals suspected of smuggling banned goods
[3] [The Diplomat] Is There a Way to Break the Deadlock in Japan-China Relations?
[4] [DW (Deutsche Welle)] China detains two Japanese nationals on smuggling charges
[5] [NRC Handelsblad] Twee Japanners zitten vast in China vanwege ‘smokkel’ van aardmetalen
[6] [The Diplomat] China Reopens a Business Channel to Japan While Political Ties Remain Frozen
[8] [Nikkei Asia] Japan, France cooperation extends to rare earths, seeking non-China sources
[9] [日本経済新聞 (Nikkei)] 「神の手ゴール」もう生まれないAI時代のW杯は超精密判定
[12] [Foreign Policy] China Flexes Its Rare-Earth Muscle—Again
[13] [Nikkei Asia] China's critical metal imports soar 60% in push to control global supply
*This text is an AI translation of an original written in Korean. Some translations or nuances may be inaccurate.