特朗普因欧洲反对美国控制格陵兰而威胁对8个欧洲国家加征10%关税，引发这些盟友警告此举将“破坏跨大西洋关系并带来危险的下行螺旋”。丹麦、挪威、瑞典、法国、德国、英国、荷兰和芬兰在联合声明中表示，参与丹麦军演“Arctic Endurance”而向格陵兰派遣的部队“不会威胁任何人”。该声明被视为特朗普近一年前重返白宫以来欧洲最强硬的公开回击之一，也被描述为紧张局势可能出现转折点。
欧盟层面，27国组成单一贸易区，其中被点名的6国属于欧盟。周日紧急磋商后，欧盟理事会主席安东尼奥·科斯塔表示，欧盟领导人一致认为关税“破坏跨大西洋关系”且“与欧盟—美国贸易协议不相容”，并称欧盟已准备“抵御任何形式的胁迫”，预计将于本周稍后召开峰会。外界同时质疑白宫如何对欧盟实施此类关税，以及特朗普可能援引的紧急经济权力在美国最高法院面临挑战的背景下，其法律路径仍不明确。
多方指出，这类以关税施压领土争议在盟友间“前所未有”，并可能促使欧盟以对等关税作为经济反制工具。欧盟外交与安全政策高级代表卡娅·卡拉斯警告，中俄将从欧美分裂中获益，并强调若格陵兰安全受威胁可在北约内部处理。北约秘书长马克·吕特称已与特朗普通话并将于本周在达沃斯会面；英国首相基尔·斯塔默表示“对盟友加征关税是错误的”。美国国内亦出现反对声音，包括参议员马克·凯利与前副总统迈克·彭斯质疑关税与潜在军事威胁的合法性与后果。
Trump threatened a 10% tariff on eight European countries for opposing American control of Greenland, prompting allies to warn the move “undermines transatlantic relations and risks a dangerous downward spiral.” Denmark, Norway, Sweden, France, Germany, the United Kingdom, the Netherlands, and Finland said in a joint statement that troops sent to Greenland for the Danish exercise “Arctic Endurance” “pose no threat to anyone.” The statement was described as Europe’s most forceful rebuke since Trump returned to the White House nearly a year ago and as a potential turning point in the tensions.
At the EU level, six of the targeted countries belong to the 27-member bloc that functions as a single trade zone. After emergency talks on Sunday, EU Council President Antonio Costa said leaders agree tariffs would undermine transatlantic relations and are incompatible with the EU–US trade agreement, adding the bloc is ready to defend itself against coercion and may hold a summit later this week. Immediate uncertainties include how the White House could implement tariffs against the EU and what US legal authority Trump could invoke, especially as emergency economic powers face a Supreme Court challenge.
Observers called the tariff threat “unprecedented” because it stems from a territorial dispute rather than trade frictions, and argued it could push Europe toward reciprocal tariffs as its primary countermeasure. EU foreign policy chief Kaja Kallas warned China and Russia would benefit from US–Europe divisions and said Greenland security can be addressed inside NATO. NATO Secretary General Mark Rutte said he spoke with Trump and will see him in Davos this week, while UK Prime Minister Keir Starmer said applying tariffs on allies is wrong. US domestic critics, including Sen. Mark Kelly and former Vice President Mike Pence, questioned the approach and Trump’s authority, warning it could fracture NATO relationships.