Donald Trump has announced a new deal with Denmark and Greenland that gives Washington permanent control over Greenland’s security and other strategic interests and will give Washington permanent power over the security and other strategic desires of the region. Trump took some credit for this new deal on social media yesterday on Friday, September 18 when he said in a social media post he calls the agreement “Infinite Life” with no end date.
The agreement would give the United States the ability to take necessary measures to secure and defend Greenland as well as US interests, Mr. Trump said. The adversaries of the United States would not be allowed to establish military bases, maintain military forces or make sensitive investments in Greenland without Washington’s written approval, he said.
But the agreement doesn't give up Greenland to the U.S. from now on. Denmark and Greenland said they maintain sovereignty and the deal still needs approval from the legislatures in those countries.
Trump Announces Plans for Larger US Military Presence
Trump also said the United States would immediately begin planning for a larger military presence in Greenland. He said there are several places where additional US military infrastructure could be built and that Washington would work with Greenland’s population on development and construction.
The United States already maintains a military presence in Greenland, including Pituffik Space Base, which is strategic because it is located between North America and Europe. The new agreement is expected to provide a framework for expanded US military access and security cooperation.
The arrangement would provide Washington with permanent access and overflight rights, and could allow the US military to expand operations on the Arctic island longer-term, US officials said. But the details of the agreement have not been made public.
Denmark And Greenland Retain Sovereignty
Despite Trump talking about the deal as giving the US “permanent control,” reports indicate that Greenland will stay under Danish sovereignty. Greenland is an autonomous territory of the Kingdom of Denmark, and the proposed security pact is not the same as an American takeover or acquisition of the territory.
Denmark and Greenland have said that the agreement recognizes the sovereignty and territorial integrity of the Kingdom of Denmark as well as the Greenlandic people’s right to self-determination. The governments have also said that the agreement is expected to be signed during the United Nations General Assembly in New York next week, subject to parliamentary approval in Copenhagen and Nuuk.
BREAKING NEWS: I am pleased to announce that the United States of America has entered into an Agreement with The Kingdom of Denmark, and Greenland, that gives the United States permanent control over security, and all other needs, in Greenland, completely addressing ALL of our…
— Donald J. Trump (@realDonaldTrump) September 19, 2026
The difference is important because Trump has long sought to gain US control of Greenland, an approach that has led to tension with Denmark and other NATO allies. New agreements that were disclosed in July show that the new one seems to be about building long-term US security and military access and not the sovereignty of Greenland in the long term.
Greenland's Strategic Importance
Greenland is clearly a strategic location in the Arctic between North America and Europe. Its geography has made the territory important in missile warning, space surveillance, military operations and overall Arctic security.
The island has also attracted more international attention as the Arctic has become more strategic. The United States has been in a military position there for decades and Washington has repeatedly emphasized Greenland’s importance to North American defence.
But the new arrangement would also restrict any potential military or strategic activity by the US adversaries, under Trump’s new deal. Trump said in the announcement that adversaries would not be able to establish bases, sustain military forces or make strategic investments in Greenland without the approval of the United States.
The Agreement Is Still In Talks.
Trump presented the agreement as a major and permanent development, but some details are still unclear because the full text has not been publicly released. The agreement also needs to go through the required approval process in Denmark and Greenland.
Thus the announcement is a new phase in US-Danish-Greenlandic security cooperation and not a change in Greenland’s sovereignty. Denmark and Greenland have welcomed the security arrangement and have defended Greenland's continued sovereignty and the right of Greenlanders to determine their future.
For Washington, the agreement would establish a long-term framework for military access and cooperation in Arctic security cooperation. And for Denmark and Greenland, the proposed agreements are aimed at preserving the sovereignty while deepening cooperation with the United States in regional defence.
The next weeks should provide more clarity on the details of the agreement and how US military access to Greenland will be extended, future infrastructure built and where third countries are allowed to go to Greenland.
