近期，多位国际关系专家指出，美国正通过其单边主义政策和对多边机制的削弱，逐步瓦解自己在二战后主导建立的全球秩序。这一秩序曾以联合国、世界贸易组织（WTO）、国际货币基金组织（IMF）等为核心，强调规则、合作与多边协商。然而，近年来美国频繁采取‘美国优先’策略，退出《巴黎气候协定》、伊朗核协议、世界卫生组织等关键国际框架，并对盟友加征关税，动摇了全球对其领导力的信任。专家认为，这种行为不仅削弱了国际制度的有效性，也鼓励其他国家转向区域合作或构建替代性机制，例如金砖国家合作机制和‘一带一路’倡议。长此以往，美国可能失去其在全球治理中的话语权，而世界或将进入一个更加碎片化、竞争激烈的新格局。有学者警告，若美国继续将短期利益置于长期战略之上，最终损害的将是其自身在全球体系中的核心地位。
Recently, several international relations experts have pointed out that the United States is gradually dismantling the global order it helped establish after World War II through its unilateral policies and weakening of multilateral institutions. That order—centered on the United Nations, the World Trade Organization (WTO), and the International Monetary Fund (IMF)—emphasized rules, cooperation, and multilateral dialogue. However, in recent years, the U.S. has repeatedly adopted an ‘America First’ approach, withdrawing from key international frameworks such as the Paris Climate Agreement, the Iran nuclear deal, and the World Health Organization, while imposing tariffs even on allies—eroding global trust in its leadership.Experts argue that such actions not only undermine the effectiveness of international institutions but also encourage other countries to pursue regional cooperation or alternative systems, such as the BRICS mechanism and the Belt and Road Initiative. Over time, the U.S. risks losing its voice in global governance, potentially ushering in a more fragmented and competitive world order. Some scholars warn that if the U.S. continues prioritizing short-term gains over long-term strategic interests, it will ultimately damage its own central position within the global system.
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