The Plain Record

Neutral daily news — clear headlines, complete facts.

National

U.S. and Denmark Reach Agreement to Expand Military Presence in Greenland

The United States and Denmark reached an agreement to expand the U.S. military presence in Greenland while maintaining Danish sovereignty over the territory.

Background: The Insurrection Act, explained: when a president can deploy troops inside the United States

By The Plain RecordUpdated September 23, 2026 at 10:12 AM EDT
Published September 19, 2026 at 2:35 AM EDT

The short answer

The United States and Denmark reached an agreement to expand the U.S. military presence in Greenland while maintaining Danish sovereignty over the territory. President Donald Trump announced on a Friday that the United States has reached an agreement with Denmark to bolster the U.S. military presence in Greenland.

Updates (18)

  • Update — September 23, 2026 at 10:12 AM EDT: A new trilateral pact allows the U.S. to expand its military presence and grants it a veto over non-NATO military presence and certain investment on the Arctic island.
  • Update — September 22, 2026 at 11:42 AM EDT: The U.S. and Denmark reached a deal regarding military access to Greenland while maintaining Danish sovereignty and the island's right to self-determination.
  • Update — September 22, 2026 at 6:20 AM EDT: The U.S. has reached a security pact with Denmark and Greenland establishing a permanent military presence and blocking Russian and Chinese infrastructure investment.
  • Update — September 20, 2026 at 11:05 AM EDT: The U.S., Denmark, and Greenland have reached a security pact to expand the American military footprint in the Arctic and restrict investments by non-NATO nations.
  • Update — September 20, 2026 at 10:20 AM EDT: The U.S., Denmark, and Greenland reached a deal to expand the American military presence while restricting adversary nations from establishing bases or sensitive investments.
  • Update — September 20, 2026 at 9:35 AM EDT: The U.S., Denmark, and Greenland reached an agreement Friday to broaden the U.S. military footprint in the Arctic while maintaining Danish sovereignty.
  • Update — September 20, 2026 at 6:05 AM EDT: Denmark and Greenland leaders expressed cautious optimism regarding a new U.S. security deal that grants permanent military access while requiring parliamentary approval.
  • Update — September 20, 2026 at 12:20 AM EDT: President Trump announced a security pact with Denmark regarding Greenland, which U.S. officials say grants permanent military access and blocks non-NATO bases.
  • Update — September 19, 2026 at 7:42 PM EDT: U.S. and Danish officials have reached a security deal to bolster the American military presence in Greenland while recognizing Danish sovereignty.
  • Update — September 19, 2026 at 1:50 PM EDT: President Trump announced a security pact intended to bolster U.S. military presence in Greenland, pending parliamentary approval in Denmark and Greenland.
  • Update — September 19, 2026 at 1:20 PM EDT: President Trump announced a deal for "permanent control" of Greenland's security, which critics say mirrors a treaty in place since 1951.
  • Update — September 19, 2026 at 10:35 AM EDT: President Trump announced a security deal for permanent U.S. access to Greenland, pending approval by Danish and Greenlandic parliaments.
  • Update — September 19, 2026 at 9:42 AM EDT: The U.S. and Denmark reached a security deal for Greenland that grants the U.S. expanded military rights and oversight of foreign investments in the territory.
  • Update — September 19, 2026 at 7:50 AM EDT: Denmark and Greenland officials expressed optimism regarding a new security pact with the U.S. that maintains Danish authority while expanding U.S. military access.
  • Update — September 19, 2026 at 6:50 AM EDT: The U.S., Denmark, and Greenland reached a security agreement to increase the U.S. military footprint while maintaining Danish authority over the island.
  • Update — September 19, 2026 at 5:20 AM EDT: The U.S., Denmark, and Greenland reached a deal to expand the American military presence in the Arctic while maintaining Danish governance of the island.
  • Update — September 19, 2026 at 4:42 AM EDT: President Donald Trump says he has a deal with Denmark to bolster the U.S. military presence in Greenland after months of threatening to take island by force from the NATO ally.
  • Update — September 19, 2026 at 4:35 AM EDT: The U.S., Denmark, and Greenland have reached a deal to expand the American military footprint in the Arctic territory following months of negotiations.
U.S. and Denmark Reach Agreement to Expand Military Presence in Greenland

The Facts

Who
President Donald Trump, Danish Prime Minister Mette Frederiksen, and Greenland Prime Minister Jens-Frederik Nielsen.
What
A military and security agreement regarding Greenland.
When
Friday, September 19, 2025 (Based on source date anchor)
Where
Greenland and the United States
Why
To address U.S. security concerns in the Arctic and deter influence from Russia and China while preserving Danish sovereignty.

President Donald Trump announced on a Friday that the United States has reached an agreement with Denmark to bolster the U.S. military presence in Greenland. The deal follows months of negotiations and previous statements by the president suggesting the U.S. might acquire the territory by force. According to the announcement, the pact recognizes Greenland remains under Danish sovereignty while granting the U.S. increased control over security matters in the Arctic territory.

The agreement comes after a period of tension during which Danish and Greenlandic officials repeatedly stated the island was not for sale. The U.S. had expressed concerns regarding the strategic importance of Greenland for North American defense against Russia and China. During this period, the administration also engaged in military operations in Venezuela and a conflict with Iran.

Under the terms of the new pact, the U.S. will begin the process of developing a larger military presence on the island, which currently hosts approximately 56,000 residents. A State Department official speaking on the condition of anonymity stated the deal prohibits non-NATO bases, limits investments from U.S. adversaries, and bars Russia and China from establishing a presence there. Secretary of State Marco Rubio described the agreement as a measure that ensures Greenland will be part of the strategic defense area of North America.

On a broader scale, the pact follows what Imran Bayoumi of the Atlantic Council described as a period of damaged U.S. credibility in Europe. The scale of the military expansion—including the specific number of new troops or the dollar amount for construction—was not reported. However, the agreement limits adversaries from being able to make investments in Greenland, which is mineral-rich.

What happens next depends on legislative approval in both Denmark and Greenland. While the three governments are scheduled to sign the pact during the United Nations General Assembly next week, parliamentary action is required in the Danish and Greenlandic governments before the terms can be enforced. The specific dates for these legislative votes were not reported. Once approved, the U.S. administration intends to begin the process of expanding its military footprint to address its stated Arctic security concerns.

Timeline of what happened

Key dates and decisions, in the order they occurred.

  1. January 1, 1951

    Defense of Greenland Treaty signed

  2. March 7, 2025

    Snow-covered houses photographed in Nuuk, Greenland

Summaries are written by The Plain Record to state the facts of a story plainly and without political slant. Drafted with AI assistance and checked against the source record before publication. See how we report, or report a correction.

← Back to the front page

Questions readers ask

What happened: U.S. and Denmark Reach Agreement to Expand Military Presence in Greenland?

President Donald Trump announced on a Friday that the United States has reached an agreement with Denmark to bolster the U.S. military presence in Greenland. The deal follows months of negotiations and previous statements by the president suggesting the U.S. might acquire the territory by force.

Who is involved?

President Donald Trump, Danish Prime Minister Mette Frederiksen, and Greenland Prime Minister Jens-Frederik Nielsen.

When did this happen?

Friday, September 19, 2025 (Based on source date anchor)

Where did this happen?

Greenland and the United States

Why does this matter?

To address U.S. security concerns in the Arctic and deter influence from Russia and China while preserving Danish sovereignty.