President Donald Trump has announced that the United States has reached an agreement with the Kingdom of Denmark and Greenland granting Washington permanent control over security in Greenland and barring any American adversary from having a military presence on the island.
In a Truth Social post which was shared on his X page on Friday, Trump described the pact as an “Infinite Life” deal with no expiration date and no cost to American taxpayers.
He said the arrangement completely addresses many U.S. concerns and ensures the United States will “forever have the complete ability to do what is necessary in Greenland in order to secure and defend the security of Greenland, and the United States of America.”
Key elements outlined by Trump include a ban on any U.S. adversary establishing a base, maintaining a military presence, or making sensitive investments in Greenland without explicit U.S. written approval.
He said the United States would “immediately begin the process of developing a large military presence in the appropriate part of Greenland” and will work with Greenlanders on its development and construction.
Trump framed the deal as a historic achievement that previous presidents recognized as strategically vital for more than a century but failed to secure.
“This is a dream come true for the United States of America, one that is very important, historic, and special,” he stated, adding that the solution benefits the U.S., Denmark, Greenland, and allies.
The announcement comes after months of tension between Washington and Copenhagen.
Since returning to office in January 2025, Trump had repeatedly said the U.S. needed to own Greenland for national security, at one point threatening to acquire it “the hard way” and threatening tariffs on Denmark.
Greenland, the world’s largest island with about 57,000 people, is an autonomous territory of Denmark. The U.S. already operates Pituffik Space Base in northwestern Greenland under a 1951 defense treaty.
Danish and Greenlandic leaders confirmed progress toward a formal agreement.
Danish Prime Minister, Mette Frederiksen’s office said the three parties expect to sign the pact next week on the sidelines of the 81st United Nations General Assembly in New York.
Frederiksen described it as strengthening common security in the Arctic and North Atlantic while recognizing the sovereignty and territorial integrity of the Kingdom of Denmark and the Greenlandic people’s right to self-determination.
Greenland Premier, Jens-Frederik Nielsen said the agreement “recognizes Greenland’s interests and our place in the international cooperation. It is to the benefit of us all.”
U.S. officials provided additional details clarifying that the deal stops short of any transfer of territory or sovereignty.
A State Department official said it provides the United States permanent access, basing, and overflight rights; explicitly bans non-NATO bases or troop presence, effectively blocks Russia and China; and includes investment-screening mechanisms for sensitive sectors.
The arrangement is designed to remain in force even if Greenland eventually becomes independent.

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