US secures two Arctic bases in Greenland under new defense pact with Denmark

Three leaders stood before the United Nations General Assembly in New York on Tuesday and signed a document that resolves, at least on paper, one of the stranger geopolitical standoffs of recent years. The United States, Denmark, and Greenland had reached agreement on a new defence pact that would allow Washington to establish two additional military bases in the Arctic territory—one at Narsarsuaq in the south, another at Mestersvig in the east—while explicitly reaffirming that Denmark retains sovereignty over Greenland and that Greenland retains the right to determine its own future.

The signing came after more than a year of tension that had begun when President Trump publicly mused about acquiring Greenland outright, citing national security concerns rooted in the island's strategic location and mineral wealth. The rhetoric had alarmed not just Greenlanders and Danes but European leaders and NATO allies, who issued a joint statement warning that such talk risked damaging transatlantic relations. Now, standing at the podium before the signing, Trump framed the agreement as a victory. "We will immediately begin the process of developing a large military presence in the appropriate locations," he said. Danish Prime Minister Mette Frederiksen called it "good for the US, Denmark and Greenland" and beneficial to Europe and NATO. Greenland's Prime Minister Jens-Frederik Nielsen described it as a "win-win-win."

The new pact amends and updates a 1951 defence agreement between Denmark and the United States. Narsarsuaq, the southern location, is a former civilian airport and World War Two base with deep-water access and a large runway; US military engineers had recently surveyed it, according to the US North Command. Mestersvig, in the east, is far more remote and undeveloped, currently used by a Danish naval dog sled unit. The agreement also permits the US to modernize and expand its existing operations at Pituffik Space Base in Greenland's northwest, where Washington already maintains more than 100 military personnel on a permanent basis. Critically, the pact specifies that the "modalities and technical details" of the new bases must be mutually agreed upon by all three parties—meaning Greenland and Denmark retain veto power over how the installations develop.

The deal includes a provision explicitly barring any non-NATO military from establishing manned or unmanned installations on the island or maintaining a persistent military presence there. Though this language is new, such restrictions were already the practical reality; the clause formalizes what was already understood. Equally important, no territory is ceded to the United States. The agreement recognizes both Denmark's sovereignty and territorial integrity and Greenland's right to self-determination. For Trump, this represents a significant retreat from his earlier calls to purchase or annex the island outright. Yet it does deliver an expanded US military footprint in the Arctic and strengthens Washington's strategic position in a region of growing geopolitical importance. To some American observers, that constitutes a historic achievement.

The agreement also contains a single reference to Trump's proposed "Golden Dome" missile defence system but offers no concrete proposals for its implementation. And it confirms that Greenland would remain part of NATO even if it were to gain independence from Denmark—a safeguard that addresses one of Greenland's core concerns about its future autonomy.

The mood at the signing ceremony was notably upbeat. Trump spoke of a "tremendous relationship, a secure relationship." Frederiksen described the moment as a "milestone" in cooperation stretching back seventy-five years, and emphasized that the new agreement "respects sovereignty and territorial integrity." Nielsen stressed that the deal was not merely about Greenland but made with Greenland, taking into account "the people of Greenland, our rights, our livelihoods and the development of our country." He noted that Greenland matters for both North American and transatlantic security in a changing strategic environment.

For Greenland, a nation of 56,000 people, the signing offered palpable relief. Its leader had negotiated directly with the world's most powerful man and emerged with a deal that should bring an end to months of uncertainty and anxiety. In Denmark, the agreement is being celebrated as a diplomatic triumph, and several political parties have already signaled support. The pact still requires approval from both Denmark's and Greenland's parliaments before it takes full effect. NATO, for its part, welcomed the deal as a step that would "help advance security, stability and cooperation in this vital region."