特朗普的稀土豪言遭遇现实挑战，美澳同盟难破中国主导地位

Group 1 - The core point of the article highlights the ambitious plans of the U.S. and Australia to enhance their critical minerals supply chain, particularly in rare earth elements, amidst significant challenges posed by China's dominance in the sector [1][3]. - The U.S. Department of Defense announced a new plan to invest up to $100 million in critical minerals to bolster national security and reduce reliance on Chinese supply chains [3][5]. - The recent agreement between the U.S. and Australia involves an $8.5 billion investment, with both countries committing over $1 billion each to initiate the first projects within six months [3][5]. Group 2 - Currently, the U.S. has only one operational rare earth mine, which poses a significant risk to the domestic supply chain, as highlighted by the U.S. Rare Earth Company [3][5]. - The U.S. relies heavily on China for its rare earth supply, with 87% of the supply chain for over 1,000 U.S. weapon systems dependent on Chinese suppliers [5][7]. - The Pentagon is adopting a dual approach to address the rare earth crisis, including procurement oversight and support for U.S. mining companies [5][7]. Group 3 - The Australian government has initiated a $1.2 billion national mineral reserve plan to stabilize the market, reflecting the ongoing challenges in the critical minerals sector [7]. - The agreement includes provisions for setting minimum price floors for critical minerals, a long-sought measure by Western miners [7]. - Despite the ambitious plans, the U.S. rare earth industry faces challenges related to market conditions and the need for technological advancements to compete effectively with China [7].