President Donald Trump said Friday that he may impose new tariffs on foreign countries as part of an aggressive effort to pressure allies into supporting U.S. acquisition of Greenland, once again turning to trade penalties as a geopolitical bargaining tool.
Speaking at the White House during a health care–related event, Trump framed Greenland as a national security imperative and suggested tariffs could be used against countries that resist his ambitions. “We need Greenland for national security,” Trump said. “So I may do that. I may put a tariff on countries if they don’t go along with Greenland.”
The comments mark a significant escalation in Trump’s long-running interest in acquiring the Arctic territory, which is an autonomous region of Denmark. While the U.S. already maintains a military base on the island, Trump has increasingly argued that outright ownership is necessary to counter growing influence from China and Russia in the Arctic.
The White House did not immediately clarify which countries could be targeted by the proposed tariffs or what form they might take. However, Trump’s remarks signal that trade policy may once again be deployed as leverage in diplomatic disputes, even those involving close U.S. allies.
Trump’s tariff threat comes amid mounting legal uncertainty surrounding his broader trade agenda. The president has dramatically expanded the use of tariffs since returning to office, pushing the average U.S. tariff rate to an estimated 17%. Many of these levies were imposed under the International Emergency Economic Powers Act (IEEPA), a move that has been repeatedly challenged in court.
Multiple lower courts have ruled that Trump exceeded his authority under IEEPA, and the issue is now before the Supreme Court. A ruling from the high court could come soon and may determine whether the administration can continue imposing wide-ranging tariffs without congressional approval. Trump has warned that his economic agenda would be severely undermined if the court rules against him.
The Greenland comments also follow Trump’s recent use of tariff threats to pressure foreign governments on pharmaceutical pricing. The president has argued that U.S. drug prices should be aligned with lower prices paid overseas and said he warned foreign leaders to raise their prices or face steep tariffs on all exports to the United States.
“I’ve done it on drugs,” Trump said Friday. “I may do it for Greenland too.”
Despite Trump’s rhetoric, both Greenland and Denmark have repeatedly rejected the idea of a sale or transfer of sovereignty. Following meetings in Washington this week with Vice President JD Vance and Secretary of State Marco Rubio, a delegation from Greenland and Denmark said they maintain a “fundamental disagreement” with the president’s position.
Trump has also previously suggested that the U.S. is weighing multiple options to secure Greenland, including economic pressure and, in extreme rhetoric, military considerations. Those statements have alarmed European allies and raised concerns about the long-term implications for NATO unity.
As the Supreme Court weighs the legality of Trump’s tariff powers and global trade partners respond to mounting uncertainty, the president’s Greenland push underscores how central tariffs have become to his foreign policy strategy. Whether the tactic yields concessions—or further strains alliances—may soon be tested.