Europe unites against Trump's Greenland tariff threat, warns of 'dangerous spiral'

President Trump's announcement of tariffs against European allies over Greenland set off the sharpest diplomatic confrontation between Washington and its NATO partners since his return to office nearly a year ago. On Saturday, he signaled he would use trade penalties as leverage to force negotiations over the status of Greenland, a semiautonomous Danish territory he views as essential to American security interests in the Arctic. The response was swift and unified in a way that caught many observers off guard: eight nations—Denmark, Norway, Sweden, France, Germany, the United Kingdom, the Netherlands, and Finland—issued a joint statement of unusual force, declaring that European troops deployed to Greenland for an operation called "Arctic Endurance" posed no threat to anyone and that tariff threats risked "a dangerous downward spiral" in transatlantic relations.

Danish Foreign Minister Lars Løkke Rasmussen told reporters in Oslo that dialogue had begun with the U.S. the previous week and would continue, but made clear his country would not yield to coercion. His Norwegian counterpart, Espen Barth Eide, was more direct: threats of tariffs between close allies were simply unacceptable. The statement itself emphasized that the eight nations stood in full solidarity with Denmark and Greenland, grounding their position in principles of sovereignty and territorial integrity. Six of the eight countries are European Union members, giving the bloc's economic weight behind the message. EU Council President Antonio Costa convened emergency talks among the bloc's national envoys on Sunday and announced that the union's leaders had agreed tariffs would undermine transatlantic relations and violate the existing EU-U.S. trade agreement. Costa said the bloc expressed readiness to defend itself against any form of coercion and indicated he would call a full summit of EU leaders later in the week.

Trump's move was unprecedented in a specific way that analysts and officials struggled to articulate at first. Rasmus Søndergaard, a senior researcher at the Danish Institute for International Studies, explained that tariff threats typically emerge from trade disputes, not from territorial disagreements between military allies. The novelty of the approach, he suggested, was precisely why European governments felt compelled to push back so forcefully. There was a strategic calculation at work: if they capitulated on this demand, what would come next? At some point, he said, you have to draw a line. Søndergaard also noted that Trump's tariff threat had inadvertently leveled the playing field. Europe could not match American military power, but the EU possessed a potent economic weapon in the form of reciprocal tariffs.

Trump had justified his position by posting on his social media platform that NATO had warned Denmark for two decades about Russian threats to Greenland, and that Denmark had failed to act. Now, he wrote, the time had come and "it will be done." EU foreign policy chief Kaja Kallas countered that if Greenland's security was genuinely at risk, the issue could be addressed within NATO itself. She also warned that divisions between the U.S. and Europe would benefit China and Russia. The practical question of how Trump could legally implement such tariffs remained murky. Legal scholars noted he might invoke emergency economic powers, though those powers are currently under challenge at the Supreme Court.

The tariff threat also fractured Trump's usual coalition of support. Italy's right-wing Premier Giorgia Meloni, considered one of his closest European allies, called the tariffs a mistake. She said the European troop deployments to Greenland had been misunderstood by Washington; they were not directed against the U.S. but aimed at security against unnamed other actors. Jordan Bardella, president of France's far-right National Rally party, went further, calling for the EU to suspend last year's tariff deal with the U.S. and describing Trump's threats as commercial blackmail. In Britain, the rare sight of all major political parties—including the hard-right Reform UK—uniting in criticism of the tariff threat underscored how far outside the bounds of normal alliance behavior Trump had ventured.

Domestic opposition in the United States added another layer of pressure. Senator Mark Kelly, an Arizona Democrat, pointed out the absurdity of the situation: American troops were not defending Greenland; European troops were arriving to defend it from the United States. He warned that the damage to American reputation and relationships was mounting, leaving the country increasingly isolated. Former Vice President Mike Pence, while expressing personal support for eventual U.S. ownership of Greenland, said he had serious doubts about Trump's constitutional authority to impose unilateral tariffs on NATO allies and expressed alarm at any suggestion of military action. Such moves, Pence said, threatened to fracture relationships not just with Denmark but with all of NATO.

NATO Secretary General Mark Rutte, who had largely avoided direct comment on the Greenland dispute, posted on Sunday that he had spoken with Trump and looked forward to seeing him at the World Economic Forum in Davos later that week. British Prime Minister Keir Starmer also called Trump to tell him that applying tariffs on allies for pursuing collective NATO security was wrong. These diplomatic channels remained open, but the underlying tension was clear: Europe was signaling it would not be bullied, while the U.S. president showed no sign of backing down. The dispute had become a test of whether the transatlantic alliance could survive a fundamental disagreement over the rules that had governed it for decades.