美国国防官员：五角大楼对MP Materials的投资将确保稀土生产和加工在短期内拥有市场。期待继续与相关企业合作，确保稀土供应链的安全与韧性，以保障国家的供应安全。

Core Viewpoint - The Pentagon's investment in MP Materials aims to ensure the short-term market presence of rare earth production and processing, highlighting the importance of securing the supply chain for national security [1] Group 1 - The investment by the Pentagon is focused on maintaining the production and processing of rare earth materials [1] - There is an expectation for continued collaboration with relevant companies to enhance the security and resilience of the rare earth supply chain [1] - The initiative is part of a broader strategy to safeguard national supply security [1]