European leaders are ramping up opposition to the U.S. administration’s renewed interest in acquiring Greenland, following recent White House claims that the territory is a “national security priority.” Officials have issued an unprecedented warning: any unilateral attempt to seize Greenland could trigger the collapse of NATO and the possible seizure of U.S. military assets across Europe.

Tensions escalated after senior U.S. aides suggested that military force remains “always an option” for the president, provoking outrage among longtime allies. Danish Prime Minister Mette Frederiksen called the rhetoric “needlessly dangerous,” stressing that Greenland belongs to its people and the Kingdom of Denmark.
In response, France, Germany, and other European nations have issued joint statements reaffirming Greenland’s sovereignty. Some regional voices even hinted at aggressive countermeasures, including the potential confiscation of U.S. facilities from Ramstein to Aviano if international law is violated.
The U.S. interest in Greenland is largely driven by its vast rare earth minerals and strategic Arctic location, essential for future energy and defense technologies. Yet Greenlandic leaders have firmly rejected what they call “annexation fantasies,” insisting they have no desire to become part of the U.S.
Experts warn that this standoff marks the most serious strain on the 76-year-old transatlantic alliance since its creation. The dispute over Greenland could reshape the global order, highlighting the growing friction between U.S. assertiveness and European sovereignty concerns.