China's Rare Earth Export Controls: Reshaping Global Defence and Geopolitics

Rare earth elements (REEs) — a group of 17 chemically similar metals — have become the invisible backbone of 21st-century defence technology. From the neodymium magnets inside precision-guided munitions to the europium phosphors in advanced radar displays, these materials are indispensable to modern military capability. China's dominance over this sector is staggering: it controls roughly 60–70% of global rare earth mining and an overwhelming 90% of processing capacity. As Deng Xiaoping prophetically remarked in 1992, "There is oil in the Middle East; there is rare earth in China." That observation has matured into a strategic reality that UPSC aspirants must grasp across GS-2 (international relations), GS-3 (security and technology), and Essay.

In April 2025, Beijing escalated its resource leverage by imposing export restrictions on seven rare earth elements — samarium, gadolinium, terbium, dysprosium, lutetium, scandium, and yttrium — as a direct retaliatory measure against the Trump administration's tariff escalation. The impact was immediate and severe: China's rare earth magnet exports fell 74% year-over-year in May 2025, while US-specific shipments plummeted by 93.3%. Only 25% of initial export licence applications were approved, and industry estimates suggest that 75% of American defence and technology companies expected their existing stockpiles to be exhausted within three months. This is not the first time China has deployed resource diplomacy — during the 2010–2012 Senkaku/Diaoyu Islands dispute with Japan, REE prices surged by approximately 2,000%, crippling Japanese electronics manufacturers and prompting a WTO complaint.

The defence implications are profound. Samarium-cobalt magnets are essential for precision weapons systems, electronic warfare suites, and the guidance mechanisms of cruise and ballistic missiles. Dysprosium is critical for the high-temperature permanent magnets used in fighter aircraft engines and military-grade electric motors. Without reliable access to these materials, even the most advanced platforms — the F-35 fighter jet uses over 900 pounds of rare earth materials — become impossible to manufacture at scale. The semiconductor dimension compounds the vulnerability: Taiwan, which dominates 68% of global foundry capacity through TSMC (62%) and UMC (6%), depends on rare earth inputs for chip fabrication. A simultaneous disruption of rare earths and semiconductor supply chains would constitute a systemic shock to Western defence-industrial capacity.

The geopolitical response has been fragmented but accelerating. The United States has invoked the Defense Production Act to fund domestic rare earth processing, Australia's Lynas Rare Earths has expanded its Malaysian facility, and the European Union has proposed a Critical Raw Materials Act mandating supply diversification. India, which holds the world's fifth-largest rare earth reserves, has begun exploring extraction partnerships but remains years away from meaningful processing capacity. For UPSC aspirants, the analytical framework here extends beyond simple resource competition — it encompasses questions of technological sovereignty, the weaponisation of economic interdependence, and the structural vulnerabilities embedded in globalised supply chains.

From an examination perspective, this topic is highly versatile. A GS-3 answer can focus on the security dimensions and India's defence-industrial preparedness. A GS-2 answer can explore how resource dependencies reshape bilateral relationships and multilateral institutions. An Essay on the theme of interdependence and vulnerability — or on whether globalisation is inherently fragile — can draw on rare earth dynamics as a central case study. Aspirants should note that this is not an isolated development but part of a broader pattern in which critical minerals, semiconductors, and data have become the new currencies of geopolitical power.