追逐西半球主导地位，要求众盟友承担责任，美国防战略报告引多方担忧

Core Viewpoint - The 2026 U.S. Defense Strategy Report prioritizes domestic security and interests in the Western Hemisphere, indicating a shift in focus from global dominance to regional control, particularly concerning Greenland, the Gulf of Mexico, and the Panama Canal [1][2]. Group 1: Defense Strategy Priorities - The report outlines four main pillars: defending the U.S. homeland, ensuring control over key regions in the Western Hemisphere, deterring China through strength rather than confrontation in the Indo-Pacific, and requiring allies to take on more responsibility [2][3]. - The emphasis on the Western Hemisphere as a strategic priority reflects a potential reduction in U.S. commitment to European security, as the report notes Europe's declining economic significance [2][3]. Group 2: Regional Implications - The report expresses concerns about threats to NATO's eastern members from Russia, labeling them as "sustained but manageable threats" while suggesting that allies should lead responses to threats that are more severe for them than for the U.S. [3][5]. - In Latin America, the report indicates a focus on combating "drug terrorists" and emphasizes the need for U.S. military and commercial access to key areas, which raises alarms among regional partners [6][7]. Group 3: China and Taiwan - The report notably omits any mention of Taiwan and shifts the focus from viewing China as the primary threat to advocating for broader military communication to achieve strategic stability [8]. - Despite the apparent softening of rhetoric towards China, the report aims to maintain a military advantage over China and suggests a strategic ambiguity regarding Taiwan, indicating ongoing U.S. interests in the region [8].