美国家安全战略报告提出“西半球优先”，美防长称门罗主义“比以往任何时候都更加强大”

Core Viewpoint - The U.S. is shifting its national security focus to the Western Hemisphere, marking a significant strategic adjustment under the Trump administration, emphasizing "America First" diplomacy and core national interests [1] Group 1: Monroe Doctrine and Military Strategy - The U.S. Defense Secretary announced the revival of the Monroe Doctrine, asserting its effectiveness and strength, with a focus on protecting U.S. homeland and interests in the hemisphere [1][2] - The strategic report suggests potential increases in military presence, bases, and operations in the Western Hemisphere to address regional tensions [1] - The U.S. currently has the largest naval deployment in the Caribbean, with over 12 vessels and more than 14,000 soldiers, and has conducted 22 strikes against drug smuggling vessels, resulting in at least 87 deaths [1] Group 2: Regional Responsibilities and Controversies - The Defense Secretary emphasized the need for neighboring countries, particularly Mexico, to take more responsibility in regional security, while acknowledging some progress [2] - Controversy arose regarding the legitimacy of U.S. counter-narcotics operations, with the Defense Secretary defending these actions as necessary for deterring threats in the hemisphere [2] - The Secretary acknowledged threats in Europe and the Middle East but stated that these regions should not rely on U.S. defense support, indicating a shift in military priorities [3]