Denmark, Greenland and the United States reached a new defense agreement announced on September 18 that broadens the American security role across Greenland while extending the framework first set out in a 1951 treaty. Danish officials laid out the terms in the days that followed, including on the sidelines of the United Nations General Assembly in New York.
Foreign Minister Lars Lokke Rasmussen said the deal would spread responsibility for the region beyond the two governments that negotiated it. “It will be in a form where responsibility for security in the Arctic is not only Danish or American,” he said, adding that “it would be NATO that looks after the Arctic.” A NATO spokesperson welcomed the accord, saying it would help advance security and cooperation in a vital region.
The agreement centers on Greenland, the vast Arctic island that is a self-governing part of the Kingdom of Denmark and home to the US installation at Pituffik Space Base, the northernmost American military site. The base has operated an early-warning radar and hosted US forces continuously since the middle of the last century, and the new text points to a wider American presence there. Pituffik, known until recently as Thule Air Base, has long been central to American missile-warning and space-tracking operations in the high north.
Copenhagen was quick to set limits on what the deal does. Danish officials stressed that the agreement does not and cannot transfer sovereignty, and the government in Nuuk said its consent covered defense cooperation only. President Donald Trump, who has repeatedly voiced interest in acquiring Greenland, described the arrangement as giving the United States permanent control over the island’s security, a characterization that goes beyond the language Danish and Greenlandic officials have used.
The agreement still needs formal backing before it takes hold, requiring approval from the Danish parliament, the Folketing, and consent from Greenland’s legislature, the Inatsisartut. The talks unfolded against months of tension over Greenland’s status and the Arctic’s growing strategic weight, as melting ice opens new shipping routes and access to minerals and draws sharper competition among the United States, Russia and China across the far north.
