ABSTRACT Donald Trump’s “America First” agenda seemingly departs drastically from United States foreign policy as practiced for many decades. This paper assesses the implications of the new U.S. approach for its relationship with Canada and for world order more broadly. America First overtly threatens the status of a wide array of bilateral and multilateral agreements as the U.S. seeks new one-sided deals with friends and foes alike. The President’s bombastic populist rhetoric and the labeling of aluminum and steel imports from Canada and other states as national security threats to the U.S. also weaken social cohesion in the western security community. The paper discusses whether U.S. behavior aligns with expectations of international relations theories and explores how Canada and other middle powers are responding to the changes wrought by America First.

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加拿大、美国优先议程和西方安全界

摘要 唐纳德特朗普的“美国优先”议程似乎与美国数十年来的外交政策大相径庭。本文评估了美国的新方法对其与加拿大的关系以及更广泛的世界秩序的影响。美国优先公然威胁一系列双边和多边协议的地位，因为美国寻求与朋友和敌人进行新的片面交易。总统夸夸其谈的民粹主义言论以及将来自加拿大和其他州的铝和钢铁进口贴上对美国的国家安全威胁的标签，也削弱了西方安全界的社会凝聚力。该文件讨论了美国是否