President Donald Trump announced a new security agreement with Denmark and Greenland that would expand the U.S. military presence on the Arctic island.

Trump described the agreement as giving the U.S. permanent control over Greenland’s security, while Denmark and Greenland said it preserves their sovereignty and right to self-determination.

The agreement does not transfer Greenland to the United States and instead builds on the existing U.S. military presence and defense arrangements there.

Trump said the deal addresses U.S. security concerns and would come at no cost to the United States, while Danish officials said the governments expect to sign the agreement during the United Nations General Assembly next week, CNBC has reported.

The full text of the agreement was not immediately available, leaving details of the expanded U.S. military role unclear.