The U.S., Denmark and Greenland said they reached an expected Arctic security agreement.
Why it matters: Greenland is strategically important for Arctic defense and NATO planning. The deal could shape how the U.S. operates there, but the exact legal limits are still unclear.
- The agreement was announced Sept. 18, 2026, with formal signature expected next week at the UN General Assembly in New York.
- Denmark said the deal would strengthen security in the Arctic and North Atlantic while respecting Danish sovereignty and Greenlanders' self-determination.
- Greenland said the arrangement would strengthen security for Greenland, Denmark, the U.S. and the Western alliance.
- Trump said the deal gives the U.S. permanent control over security and other needs in Greenland and would allow a larger military presence.
Denmark, Greenland and the United States said they had reached an expected agreement to strengthen security in the Arctic and North Atlantic, with a formal signing expected next week at the UN General Assembly in New York.
The Danish prime minister's office said the arrangement would be good for NATO and Europe, while recognizing the Kingdom of Denmark's sovereignty and territorial integrity, as well as Greenlanders' right to self-determination. Greenland's government said the deal would strengthen security for Greenland, Denmark, the U.S. and the Western alliance.
The governments did not publicly release the full legal text, leaving the exact scope of any new powers, basing rights, access arrangements or security measures unclear.
Trump described the arrangement more expansively, saying it gave the U.S. permanent control over security and other needs in Greenland and would lead to a large U.S. military presence there, according to AP. Other reporting described the deal as preserving Danish and Greenlandic sovereignty while giving Washington more room on security issues, according to The Washington Post.
Greenland is a self-governing territory within the Kingdom of Denmark and a key Arctic location. The U.S. already has a long-standing military presence at Pituffik, dating to the Cold War, according to The Guardian.
By the numbers
- Sept. 18, 2026 - Date the expected agreement was announced.
- Next week - When formal signing was said to be expected at the UN General Assembly.
- Cold War - Era when the U.S. military presence at Pituffik dates to, according to The Guardian.
Yes, but: The governments have not publicly released the full legal text, so the exact scope of any new powers or military access remains unclear.
What's next: Formal signature is expected next week at the UN General Assembly in New York.