Denmark’s prime minister said the transatlantic dispute over Greenland remains “difficult,” even as allies shifted the conversation toward Arctic security and NATO’s role around the world’s largest island.
“It is still a difficult and serious situation, but progress has also been made in the sense that we have now got things where they need to be. Namely that we can discuss how we promote common security in the Arctic region,” she said.
Mette Frederiksen added that no negotiations had been held with NATO on Greenland’s sovereignty-reiterating that the Arctic territory, which forms part of the Kingdom of Denmark and enjoys extensive self-rule, is not a subject for alliance bargaining. She simultaneously called for a “permanent presence of NATO in the Arctic region, including around Greenland,” positioning the debate firmly in the realm of collective defence rather than territorial change.
The comments came as Donald Trump again floated a deal to satisfy his desire for a “Golden Dome” missile‑defence system and access to critical minerals, framing it as a way to block Russian and Chinese ambitions in the Arctic. After meeting NATO Secretary‑General Mark Rutte, Trump said specific negotiations over the island would continue between the United States, Denmark and Greenland. Rutte, for his part, said minerals exploitation was not discussed in his meeting with Trump, underscoring the gap between Washington’s political messaging and what alliance officials say is actually on the table.
European leaders signaled they would not let allied frictions widen. Estonia’s Kaja Kallas warned that “disagreements that allies have between them, like Europe and America, are just benefiting our adversaries who are looking and enjoying the view”. Finland’s President Alexander Stubb said he hoped allies could assemble an Arctic‑security package by a NATO summit slated for July in Ankara, turning the Greenland dispute into a test case for alliance cohesion. The United Kingdom told Rutte it stood ready to play a full part in Arctic security, according to a spokesperson for Prime Minister Keir Starmer, even as London has avoided taking a public position on Trump’s specific Greenland proposals.
NATO calculus meets a legal hard stop
At the heart of the current standoff is a well‑defined legal architecture that neither Washington nor Copenhagen disputes. Under the 1951 Agreement relating to the Defense of Greenland-concluded by Denmark and the United States at NATO’s request-U.S. forces may construct and operate military facilities in Greenland “for the defense of Greenland and the rest of the North Atlantic Treaty area,” with the agreement in force for the duration of the NATO Treaty. The accord recognizes Danish sovereignty, sets procedures for cooperation with Danish and Greenlandic authorities, and effectively ring‑fences military access from any broader sovereignty claims.
That framework already underpins the U.S. presence at Pituffik in northwestern Greenland, the northernmost American installation and a key node in early‑warning and space‑domain awareness. The base-known for decades as Thule Air Base-was formally renamed Pituffik Space Base on April 6, 2023, reflecting its role in the U.S. Space Force and adopting the traditional Greenlandic toponym. In practice, it shows that extensive U.S. activity can proceed under existing arrangements without reopening the question of who owns the island.
Greenland’s autonomy over resources-and its red lines
Greenland’s modern constitutional position also constrains any mineral‑access bargain. The 2009 Self‑Government Act recognizes the Greenlandic people’s right to self‑determination and transfers decision‑making on subsoil resources to the Self‑Government in Nuuk; resource revenues accrue to Greenland, with a mechanism to reduce Denmark’s annual block grant as earnings grow. That arrangement gives local authorities both legal control and a direct fiscal incentive to manage mining and critical‑minerals projects themselves, limiting what Copenhagen or NATO capitals can promise on their behalf.
Environmental policy has further narrowed the space for deals. In December 2021, Greenland’s parliament enacted a statutory ban on uranium prospecting, exploration and exploitation, and on other mining where the uranium content exceeds 100 ppm-legislation that has shaped the fate of rare‑earth projects in the south of the island. For any U.S. offer that hinges on expanded access to strategic minerals, those domestic guardrails now sit alongside the defence treaties as binding constraints.
Allies move to close ranks in the Arctic
NATO’s interest in the High North is rising as sea ice recedes and Russian and Chinese activity grows, but allied governments say Arctic security must proceed within established law rather than ad hoc political deals. The five Arctic Ocean coastal states-Denmark (for Greenland), the United States, Canada, Norway and Russia-affirmed in the 2008 Ilulissat Declaration that the existing law‑of‑the‑sea framework applies in the Arctic and that disputes should be settled in an orderly way under that regime, not by devising a new legal order. That commitment, made outside NATO but binding on several of its key members, now serves as a reference point when leaders push back against any suggestion of changing borders to achieve security goals.
Frederiksen’s call for a stronger NATO presence therefore intersects with, rather than replaces, the bilateral U.S.-Danish-Greenland defense framework already in force. For policymakers, the core question is no longer whether the alliance can move into the Arctic, but how to do so while respecting Greenland’s self‑government and the legal obligations its allies have already signed.
Washington’s ask meets Europe’s memory
Trump’s renewed push comes five years after his 2019 bid to purchase Greenland triggered a diplomatic rupture; Frederiksen dismissed the notion as “an absurd discussion,” and Trump canceled a planned visit to Copenhagen. The episode hardened political sensitivities in both Denmark and Greenland about sovereignty and agency-even as security cooperation continued-and now colors domestic debates whenever U.S. leaders raise the island in transactional terms.
Since then, the United States has also rebuilt day‑to‑day diplomatic ties on the island, reopening a consulate in Nuuk on June 10, 2020, as part of a broader Arctic engagement push. That presence gives Washington a venue to talk directly with Greenlandic officials about investment, infrastructure and environmental standards, even as the formal defence relationship remains anchored in agreements with Copenhagen.
What existing agreements already allow
Analysts note that Washington does not need sovereignty transfers to expand military activity on Greenland under current accords. “It is important to clarify that the US had 17 bases during the Cold War and much greater activity. So that is already possible now under the current agreement,” said Marc Jacobsen of the Royal Danish Defence College. He added: “I think there will be concrete discussions about Golden Dome, and I think there will be concrete discussions about Russia and China not being welcome in Greenland.”
- April 27, 1951 – Denmark and the United States sign the Defense of Greenland agreement at NATO’s behest, establishing U.S. defence rights while recognizing Danish sovereignty.
- June 21, 2009 – The Self‑Government Act enters into force, granting Greenland control over minerals and recognizing the right of self‑determination.
- June 10, 2020 – The United States reopens its consulate in Nuuk, signaling a sustained diplomatic presence.
- April 6, 2023 – Thule Air Base is renamed Pituffik Space Base by the U.S. Space Force.
- December 1-2, 2021 – Greenland’s parliament enacts a uranium ban that shapes potential rare‑earth development.
- May 28, 2008 – Arctic coastal states adopt the Ilulissat Declaration, reaffirming that UNCLOS principles govern the Arctic Ocean.
As of January 23, 2026, Denmark says no NATO negotiations on Greenland’s sovereignty are under way; the United States continues operating Pituffik Space Base under the 1951 agreement; and tripartite U.S.-Denmark-Greenland consultations are continuing on Arctic security and access, with legal red lines clearly set by the defence treaty and Greenland’s own self‑government framework.
