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 reports of American espionage have infuriated leaders in Denmark, with Greenland's PM labelling it "disrespectful"

Danish Prime Minister Mette Frederiksen told the Associated Press “you cannot spy against an ally” after reports that the United States has stepped up intelligence gathering on Greenland, a semi-autonomous Danish territory coveted by U.