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Greenland’s new security pact with the United States and Denmark gives Washington broad access to the island’s airspace and territory while keeping Greenland inside the Kingdom of Denmark. CBS News reports that President Donald Trump, Greenland Premier Jens-Frederik Nielsen and Danish Prime Minister Mette Frederiksen signed it on 22 September 2026 at the UN General Assembly. Six days later, Denmark told the UN the pact benefits all parties.
Contents
- What the pact says
- Bases and the Arctic map
- The clauses aimed at outside powers
- What the reporting does not answer
- Key questions
What the pact says
According to CBS, the agreement has no end date and keeps applying if Greenland later becomes independent. It reaffirms Greenland’s sovereignty as part of Denmark’s kingdom. Nielsen said it should settle any doubt about where Greenland’s loyalty lies, while Frederiksen stressed that it respects both Denmark’s territorial integrity and Greenland’s right to self-determination.
Bases and the Arctic map
The pact expands the existing Pituffik Space Base, the northernmost U.S. military installation, which CBS says serves as a missile early-warning site. It also authorises new bases at Narsarsuaq in the south and Mestersvig in the east. Any of the three parties may propose further defence areas, but each one needs mutual approval.
The clauses aimed at outside powers
Two clauses reach beyond the three signatories. Non-NATO countries cannot set up military bases on the island without tri-party approval, and the agreement blocks foreign investment from countries that are in neither NATO nor the EU. CBS describes both as targeting Chinese and Russian influence. For related reading on the other side of that rivalry, see our reports on the U.S. arms offer involving China and Russia’s strikes on Kyiv.
What the reporting does not answer
The coverage reviewed for this article does not set out a ratification process, for example whether the Danish or Greenlandic parliaments must vote, and it does not give a timetable for construction at the new sites. Those questions, along with costs and local consultation, are the next things to watch. We will update this story when a primary document or official schedule is published.
Key questions
When was the Greenland security agreement signed?
CBS News reports it was signed on 22 September 2026 at the UN General Assembly in New York by President Trump, Greenland Premier Jens-Frederik Nielsen and Danish Prime Minister Mette Frederiksen.
Which bases does it cover?
It expands the existing Pituffik Space Base and authorises new bases at Narsarsuaq and Mestersvig, per CBS News.
Does it change Greenland’s sovereignty?
CBS reports the agreement reaffirms Greenland’s sovereignty as part of the Kingdom of Denmark while giving the U.S. broad access to its airspace and territory.
Who is shut out?
The deal prevents non-NATO countries from establishing military bases without approval from all three parties and blocks investment from countries outside NATO and the EU, a provision aimed at China and Russia.
How long does it last?
CBS describes it as indefinite, and says it continues even if Greenland becomes independent.
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