**Introduction** Trade in critical minerals plays a central role in shaping industrial development and national security by determining access to essential inputs for advanced manufacturing, clean energy systems, and defense technologies. As supply chains for these minerals are highly concentrated and geopolitically exposed, governments increasingly treat their trade as a strategic issue rather than a purely commercial one, linking mineral access directly to industrial competitiveness and security resilience[1]. **What are critical minerals?** Critical minerals are materials that are economically vital but vulnerable to supply disruption due to geographic concentration, limited substitutability, or political instability. They are indispensable for sectors such as semiconductors, electric vehicles, renewable energy, aerospace, and defense systems. While extraction is often dispersed across resource-rich economies, processing and refining capacity is typically far more concentrated, creating structural vulnerabilities in global supply chains[2]. **Roles of critical minerals trade in industry and national security** **1.** **Industrial competitiveness and structural transformation** Trade in critical minerals directly shapes industrial outcomes by influencing production costs, investment decisions, and the scalability of downstream industries. Reliable access to lithium, cobalt, nickel, graphite, and rare earth elements is essential for batteries, power electronics, and clean energy equipment. Supply disruptions or trade restrictions raise input costs, delay capacity expansion, and weaken industrial competitiveness[2]. As a result, governments increasingly link critical minerals trade to industrial policy, targeting not only extraction but also processing, refining, and recycling. Trade instruments, subsidies, and investment screening are used to anchor these activities domestically or within trusted partner networks, reshaping comparative advantage along strategic rather than purely market-based lines[1]. **2.** **Supply chain resilience and trade reconfiguration** Critical minerals trade has become a key driver of supply chain reconfiguration. High concentration in processing and refining has prompted diversification strategies such as friend-shoring, long-term offtake agreements, and bilateral partnerships. These approaches redirect trade and investment toward politically aligned producers, altering global trade patterns[1][3]. While diversification enhances resilience, it often increases costs and reduces efficiency, particularly in clean energy supply chains where critical minerals availability directly affects the pace and affordability of the energy transition[2]. **3.** **National security and geoeconomic leverage** From a national security perspective, control over critical mineral supply chains confers strategic leverage. These materials are embedded in defense systems, energy infrastructure, and digital technologies, making supply disruptions a direct security risk. Governments increasingly integrate critical minerals trade into security planning through export controls, stockpiling, investment restrictions, and strategic agreements[1][3]. This reflects a broader shift toward geoeconomic statecraft, where trade and investment policies are used to manage strategic dependencies and mitigate vulnerabilities during geopolitical crises. **4.** **Implications for resource-rich economies** For resource-rich developing economies, growing demand for critical minerals offers opportunities for export growth and industrial upgrading. However, without effective governance and diversification strategies, critical minerals trade can reinforce dependency and exposure to price volatility. Pressures to align with specific geopolitical blocs may further constrain policy autonomy and long-term development outcomes[4]. **Conclusion** Trade in critical minerals has become a cornerstone of industrial strategy and national security. It shapes which economies can build competitive industries in clean energy, advanced manufacturing, and defense, while also creating strategic dependencies that influence geopolitical alignment. As governments increasingly manage mineral trade through security-oriented and industrial policy tools, global markets are becoming more fragmented, intensifying the trade-offs between efficiency, resilience, and strategic control.
