Denmark covertly deployed troops to Greenland with explosives and a contingency plan to destroy airport runways in order to prevent U.S. military aircraft from landing on the island, according to a bombshell report citing 12 high-level sources.
The operation, reportedly code-named Arctic Endurance, was disguised as a routine NATO exercise — concealing what sources describe as a real-world contingency operation designed to give Denmark a last-resort option if the United States moved to assert military control over the autonomous Danish territory.
Context: Trump and Greenland
The report lands against a backdrop of sustained tension between Washington and Copenhagen over Greenland. President Trump has repeatedly and publicly expressed a desire for the United States to acquire Greenland, citing its strategic Arctic location and vast natural resources. His administration has refused to rule out the use of military or economic force to achieve that goal — statements that sent alarm bells ringing in European capitals.
Denmark, which handles Greenland’s foreign policy and defense while the island governs itself domestically, found itself in the uncomfortable position of being a NATO ally that felt compelled to quietly prepare defenses against another NATO ally.
The Implications
If confirmed, the operation would represent one of the most dramatic examples of intra-alliance tension in NATO’s modern history. It suggests that at least some European governments have moved beyond diplomatic concern about U.S. intentions and begun taking concrete — if secret — defensive measures.
Denmark has not officially confirmed or denied the report. The Danish government said it does not comment on intelligence matters.