The Danish foreign minister expressed openness to working more closely with the U.S. to ensure its interests in the region are addressed after President-elect Donald Trump said he wants to buy the Danish territory of Greenland—but the foreign minister continued to cast doubt on Trump’s idea to acquire the island,

U.S. President-elect Donald Trump says he wants to make Greenland a part of the United States and does not rule out using military or economic power to get Denmark to hand it over.

Pituffik Space Base, located in the far north of Greenland since the end of the second world war, is home to 200 US military personnel and 450 other forces and contractors from allies, part of Washington’s missile early warning system as well as offering space surveillance and satellite command.