特朗普访华前，向全球下最后通牒，必须对中国动手，不帮忙就加税

Core Viewpoint - The article discusses the U.S. government's recent actions regarding rare earth minerals, emphasizing the pressure on allies to diversify supply chains away from China and the implications of a new presidential announcement that threatens tariffs and import quotas if agreements are not reached within 180 days [1][4][12]. Group 1: U.S. Strategy on Rare Earth Minerals - The U.S. aims to compel allies to diversify their supply chains for critical minerals, particularly targeting reliance on China [4][6]. - Allies are required to invest in rare earth processing facilities outside of China and ensure long-term purchasing agreements with U.S. companies [4][6]. - The U.S. seeks to establish a buyer alliance among major consuming countries to set minimum purchase prices for rare earths, aiming to undermine China's market influence [6][8]. Group 2: Challenges and Resistance - Experts indicate that creating a stable supply chain independent of China will require over a decade and substantial financial investment, highlighting the impracticality of the U.S. demands [8][10]. - Internal disagreements among G7 countries regarding the approach to China complicate the U.S. strategy, with concerns about rising costs and technological challenges for Western companies [10][12]. - The U.S. approach is seen as a political maneuver that could disrupt established market dynamics, raising questions about the feasibility of such rapid changes in supply chains [12].