He has said the U.S. will take control of Greenland eventually and has not ruled out military intervention, alarming American allies, particularly Denmark. The U.S. has a military

The prospect of American annexation has reinvigorated ties between the island and Copenhagen, though aspirations for independence persist.

Danish Prime Minister Mette Frederiksen has issued a stern warning to the Trump administration following reports that U.S. intelligence agencies have been ordered to increase surveillance efforts targeting Greenland.