Energy Diplomacy in Transition: Rare Earths, Renewables, and the Strategic Tug-of-War

In the backdrop of a rapidly changing global energy landscape, rare earth elements (REEs) have emerged as both the linchpin and the bottleneck for sustainable transitions. The 17 metallic elements, especially neodymium, dysprosium, and terbium, are critical for electric vehicles (EVs), wind turbines, advanced semiconductors, missile systems, and even medical diagnostics. Although REEs are not geologically rare, their refinement is technically difficult, environmentally damaging, and overwhelmingly dominated by China, which processes nearly 90% of the global supply. As Craig S. Hart emphasizes in Mapping China’s Strategy for Rare Earths Dominance, China’s vertical integration—from mining to magnet production—has allowed it to control the lifeline of the energy transition in ways few other countries can replicate.

This control took a sharp geopolitical turn when, in April 2025, China implemented new export restrictions on seven REEs, citing national security and environmental concerns. Among the restricted were gadolinium, samarium, and lutetium, essential for military and automotive applications. While these moves have been framed as regulatory, their impact reveals deeper strategic currents. The European Union, India, and the United States have since warned that production lines in EV and aerospace sectors could grind to a halt. This echoes earlier forecasts made in the International Energy Agency’s Role of Critical Minerals in Clean Energy Transitions, which had flagged rare earths as potential choke points in clean energy supply chains.

Hart’s report for the Atlantic Council is clear that China’s rare earth consolidation has never just been about economic efficiency. Through subsidies, tax relief, price controls, and a regulatory environment favorable to vertically integrated state-owned enterprises, China created what Dudley J. Kingsnorth once called a rare earths juggernaut in his earlier work on supply chain bottlenecks. These steps align closely with China’s broader techno-industrial policy objectives, such as those articulated in the “Made in China 2025” initiative and the Belt and Road Initiative. Control of rare earths, then, is not only a commercial advantage—it is a form of geopolitical influence.

Indeed, this influence has both hard and soft dimensions. China has previously used its REE leverage in diplomatic contexts, as seen during the 2010 dispute with Japan. But it also uses its position to secure long-term partnerships through the Belt and Road Initiative by bundling rare earth investments with infrastructure development. This form of economic statecraft is well documented by Klaus Gaida and colleagues in their Critical Technology Tracker, who argue that such resource diplomacy is often layered with financial, political, and strategic aims.

However, this growing reliance on a single supplier has introduced new vulnerabilities into global clean energy transitions. As Pavel Golev and co-authors point out in their analysis of rare earth supply chains, the problem isn’t access to ores—it’s refining. REEs exist in places like the United States, Australia, and Myanmar, but few countries have the infrastructure or technical expertise to refine them at scale. Even when resources are geographically available, the technological and environmental challenges in developing refining capacity have limited meaningful diversification.

The current standoff is intensifying these concerns. The European Commission has responded with 13 new raw material initiatives, while Japan continues to invest in Australia’s Lynas Corp to reduce dependency. India is stepping up domestic exploration and forming new alliances, while the U.S. has invoked the Defense Production Act to bolster domestic capabilities. Still, as the McKinsey Global Institute warned in its Global Trade Explorer 2024, addressing supply chain resilience in critical minerals is a long-term project, hampered by market volatility, regulatory hurdles, and the cost of refining technologies.

It’s worth noting that these developments are not happening in isolation. Rare earths are just part of a larger puzzle that includes lithium, cobalt, and nickel—materials essential to energy storage and high-tech manufacturing. Yet, the rare earths market remains the most consolidated. Andrew Packey and Dudley J. Kingsnorth highlighted this asymmetry in their study of market competitiveness, noting how China’s grey-market supply, combined with state-led industrial policy, has discouraged private investment elsewhere.

This raises fundamental questions for energy diplomacy. As Kathleen M. Tracy outlined in her Overview of Rare Earth Elements for Congress, the politics of access to critical minerals is quickly becoming central to how states position themselves in the global order. The energy transition is no longer just about carbon; it’s about the minerals embedded in solar panels, batteries, and wind turbines. This shift means that energy diplomacy must now account for non-renewable constraints at the heart of renewables.

Hart proposes a multi-pronged path forward: investment in domestic mining and refining, strategic reserves, international cooperation on sustainability standards, and support for materials research. These are all sensible moves. The U.S. Department of Energy, in its Neodymium Supply Chain Report, also emphasizes the importance of recycling and developing substitute materials to relieve pressure on virgin REE supply.

Some nations are exploring “friend-shoring”—a supply-chain strategy focused on sourcing from politically aligned nations. This model has potential, but it requires coordination, trust, and consistent policy frameworks. Without these, supply shocks and geopolitical rifts are likely to continue. The challenge, as noted in Bloomberg L.P.’s Market Cap Review 2025, is balancing energy independence with affordability and sustainability, especially as consumer demand for EVs and green technologies continues to surge.

The rare earths crisis is less a question of geological scarcity than of strategic foresight. The infrastructure to mine exists; the will to process and refine is lagging behind. As the transition to clean energy accelerates, so does the urgency of rethinking what energy security really means. The picture today is not about oil wells or gas pipelines. It’s about minerals that run through the circuitry of everything from smartphones to wind turbines—minerals often mined in one hemisphere, refined in another, and sold in global markets that are anything but neutral. The future of energy diplomacy will depend not only on who controls these resources, but how they are managed, shared, and protected in an increasingly interconnected world.