全球多边主义体系正经历深刻危机。特朗普访问联合国纽约总部期间，大厅自动扶梯故障、演讲传送提示器出现问题，这些技术故障被视为象征性事件，反映了战后国际秩序面临的严峻挑战1。美国在特朗普政府领导下已退出数十个国际组织和条约，包括世界卫生组织、《巴黎气候协议》和联合国教科文组织等1。
专家普遍认为，世界正处于权力格局转变的关键时期。芬兰总统亚历山大·斯图布预测，全球将在未来五年内出现新的国际秩序1。欧洲对外关系委员会主任马克·伦纳德指出，"这一时刻不是美国主导秩序和中国主导秩序之间的短暂中断，而是世界将在一段时间内处于完全无序状态"1。
与此同时，新的力量组合正在形成。2026年8月初，沙特阿拉伯、土耳其和巴基斯坦启动《麦加防御公约》，提供北约式的相互防御保障1。传统国际机制如联合国安理会和世贸组织面临改革压力，地区性小多边联盟和新兴经济体集团如BRICS逐渐崭露头角。非洲大陆自由贸易区自2018年获得几乎所有非洲国家批准以来，实施进展缓慢1。
The global multilateral system faces unprecedented strain as traditional international institutions struggle to maintain relevance in a shifting geopolitical landscape. During a visit to the United Nations headquarters in New York in September 2025, mechanical failures—including a malfunctioning escalator in the main hall and a teleprompter malfunction during remarks—served as an unintended symbol of the deeper challenges confronting the post-World War II international order.1
Experts warn that the world is entering a period of profound uncertainty regarding its institutional architecture. Finland's President Alexander Stubb believes a new international order will emerge within the next five years, while Mark Leonard, director of the European Council on Foreign Relations, contends that "this moment is not a brief interruption between a U.S.-led order and a China-led order, but rather a period in which the world will exist in a state of complete disorder for some time."1 The United States, under the Trump administration, has withdrawn from dozens of international organizations and agreements, including the World Health Organization, the Paris Climate Agreement, and UNESCO.1
Simultaneously, alternative power structures are taking shape to fill the void left by declining traditional multilateralism. In early August 2026, Saudi Arabia, Turkey, and Pakistan launched the Mecca Defense Pact, which provides mutual defense guarantees modeled on NATO.1 Meanwhile, the African Continental Free Trade Area, which received approval from nearly all African nations since 2018, continues to advance slowly in implementation.1
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