Explainer-What is in the US-Greenland-Denmark security deal?


US President Donald Trump shows a signed document as he attends a trilateral signing event with Danish Prime Minister Mette Frederiksen (not pictured) and Greenland Prime Minister Jens-Frederik Nielsen (not pictured) regarding a deal on Greenland's security, during the 81st United Nations General Assembly (UNGA), in New York City, US, September 22, 2026. REUTERS/Kylie Cooper

COPENHAGEN, Sept 22 (Reuters) - The United ⁠States, Denmark and Greenland signed a security agreement on Tuesday aimed at ⁠ending months of tension over the Danishself-governing territory after US President Donald ‌Trump's repeated threats to take control of the vast Arctic island.

Here are some key components of the deal, which adds to a 1951 US-Danish pact on Greenland's defence, according to a text published by ​the Danish government.

WHAT ARE THE MILITARY ASPECTS OF THE ⁠DEAL?

The agreement allows the United States ⁠to establish two new military bases — one at Narsarsuaq in southern Greenland and the ⁠other ‌at Mestersvig on the east coast — and to expand Pituffik Space Base, currently its only active base on the island.

UScraft including planes and vessels get ⁠flyover, landing and undersea rights in all of Greenland, ​including territorial waters.

The agreement ‌does not specify troop numbers or timelines.

HOW DOES THE PACT WORK WITH NATO?

The ⁠agreement expresses support ​for a stronger NATO presence in the Arctic, and Denmark commits to further strengthen its own security posture in the region.

If Greenland ever become independent, Denmark and Greenland must ensure ⁠the new state remains in NATO, applying for membership ​if necessary.

Non-NATO members are barred from having an ongoing military presence in Greenland.

WHAT RIGHTS DOES GREENLAND HAVE?

The agreement says it respects Greenland's right to self-determination. Under the accord, the ⁠US must act in a way that respects Greenlandic society and the Greenlandic way of life.

WHAT ARE ECONOMIC ASPECTS OF THE PACT?

The agreement does not address US interests or investments into Greenland's mining and resources sector.

The deal bars investors from outside NATO ​member states, NATO partners or the European Union from having ⁠control or major influence over sensitive sectors in Greenland.

Greenland will screen investments to enforce ​those rules.

WHAT HAPPENS NOW?

The parliaments of Greenland and Denmark ‌must approve the agreement before it goes ​into effect.

The pact has no end date and can be amended only by mutual consent.

(Reporting by Louise Rasmussen and Stine Jacobsen; Editing by Cynthia Osterman)

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