President Donald Trump announced Friday evening that he has secured a “permanent control” over the security of Greenland, the autonomous Danish Arctic territory he has coveted for months. The announcement, made in a lengthy post on his Truth Social network, sets the stage for an agreement to be officially unveiled next week in New York.
What the Deal Entails
According to Trump, the agreement grants the United States “permanent control over the security, as well as all other needs” of Greenland, with no time limit. The president said he has directed his administration to “ensure that the United States will FOREVER have the full capability to do what is necessary in Greenland to secure and defend the security of Greenland and the United States of America.”
In practical terms, the text is intended to prevent any Washington “adversary” — with China and Russia explicitly targeted, according to a State Department official — from establishing a military base on the island, deploying troops there, or making investments in sensitive sectors without written US approval. A significant caveat: this clause would remain in force even if Greenland were to achieve full independence one day.
Expanded US Military Footprint
Trump announced the immediate launch of a process aimed at developing a larger American presence on the island, without providing a timeline. Several media outlets, cited by AFP, report that three new bases could soon open in southern Greenland, adding to the Pituffik base already operated by the United States in the north.
Reuters, which exclusively reported Friday that Washington and Copenhagen were on the verge of concluding a deal, noted that negotiations also covered the use of Greenlandic territory for the “Golden Dome,” the massive missile defense shield the Trump administration seeks to build to protect the US mainland.
It is worth recalling that a bilateral defense agreement signed in 1951 and updated in 2004 already gave the US military near carte blanche to deploy installations on the island, provided local authorities were informed. The United States once maintained as many as 17 military installations there.
Danish and Greenlandic Framing
From the Danish and Greenlandic sides, the tone is reassuring and carefully avoids any mention of a sovereignty transfer. Copenhagen welcomed an agreement “good for NATO and Europe,” and Danish Prime Minister Mette Frederiksen stressed that the text “recognizes the sovereignty and territorial integrity of the Kingdom (of Denmark) and the right of the Greenlandic people to self-determination.”
According to Reuters, her office even specified that the agreement would strengthen the security of the North Atlantic and the Arctic. Greenlandic government head Jens-Frederik Nielsen welcomed a compromise that “guarantees” the island’s security and “recognizes its interests,” adding that “it benefits everyone.” On the American side, Secretary of State Marco Rubio described a compromise that “addresses all our national security concerns regarding Greenland.”
Remaining Uncertainties
While the announcement marks a significant step, several points remain unclear. Reuters emphasized that “the scope of the agreement remains vague” at this stage, and that Frederiksen’s office indicated parliamentary approval would still be required in both Denmark and Greenland before the text could fully take effect — a step Trump did not mention in his announcement.
The precise timeline for installing new US bases, as well as the exact definition of “sensitive investments” covered by the agreement, also remain to be clarified.

