Trump Signs US-Denmark-Greenland Arctic Security Agreement

Trump Signs US-Denmark-Greenland Arctic Security Agreement/ TezzBuzz/ WASHINGTON/ J. Mansour/ President Donald Trump signed an agreement with Denmark and Greenland to strengthen security across the Arctic and North Atlantic. The accord permits a larger U.S. military presence in Greenland while recognizing Danish sovereignty and Greenlandic self-determination. Trump said the United States would begin developing two major military bases on the strategically important island.

Denmark’s Prime Minister Mette Frederiksen, center, Greenland’s Prime Minister Jens-Frederik Nielsen, right, and US President Donald Trump at the signing ceremony of a security deal between the U.S., Denmark and Greenland at United Nations headquarters, Tuesday, Sept. 22, 2026. (Mads Claus Rasmussen/Ritzau Scanpix via AP)
President Donald Trump signs a security agreement with Denmark’s Prime Minister Mette Frederiksen and Greenland’s Prime Minister Jens-Frederik Nielsen during the United Nations General Assembly, Tuesday, Sept. 22, 2026, at the UN headquarters. (AP Photo/Julia Demaree Nikhinson)

Quick Look

  • The United States, Denmark and Greenland signed the agreement Tuesday.
  • The deal focuses on Arctic and North Atlantic security.
  • Greenland remains a semiautonomous territory within the Kingdom of Denmark.
  • Trump said the United States would develop two major military bases.
  • Approximately 200 American troops currently serve at Pituffik Space Base.
  • The U.S. once operated 17 bases and installations across Greenland.
  • The agreement followed months of tension within NATO.
  • Denmark said the deal recognizes its sovereignty and Greenland’s right to self-determination.
  • Greenland said the accord strengthens the wider Western alliance.
  • Analysts warned that repairing lost transatlantic trust could take years.
Denmark’s Prime Minister Mette Frederiksen, Greenland’s Prime Minister Jens-Frederik Nielsen, left, and US President Donald Trump at the signing ceremony of a security deal between the U.S., Denmark and Greenland at United Nations headquarters, Tuesday, Sept. 22, 2026. (Mads Claus Rasmussen/Ritzau Scanpix via AP)

Deep Look

Three governments sign Arctic agreement

President Donald Trump signed a security agreement with Denmark and Greenland on Tuesday on the sidelines of the U.N. General Assembly in New York.

The accord is intended to strengthen security in the Arctic and North Atlantic by expanding the American military presence in Greenland.

The agreement leaves Greenland under Danish control, easing a dispute triggered by Trump’s repeated statements that the United States should acquire the mineral-rich Arctic territory.

The three governments released few detailed provisions before the signing.

Greenland remains part of Denmark

Greenland is a semiautonomous territory within the Kingdom of Denmark. The agreement does not transfer ownership or sovereignty to the United States.

Denmark’s government emphasized that international agreements negotiated jointly with Greenland should, whenever possible, be signed by both the Danish government and Greenland’s Naalakkersuisut.

The arrangement instead provides the United States with greater military access while preserving Greenland’s existing political status.

Trump’s demands strained NATO relations

For months, Trump called for Greenland to become part of the United States and declined to rule out using military force to seize the territory from Denmark, a NATO ally.

Danish Prime Minister Mette Frederiksen warned that an American takeover would effectively mean the end of the transatlantic alliance.

The dispute alarmed many of Greenland’s approximately 56,000 residents and damaged relations between Washington, Denmark and other European Union governments.

European countries responded by increasing security exercises and financial assistance for Greenland.

US military presence has declined for decades

The United States has maintained a military presence in Greenland since World War II.

At its height, the American presence included thousands of service members operating from 17 bases and installations. That deployment has declined to approximately 200 troops stationed at Pituffik Space Base in northwestern Greenland.

Pituffik supports missile-warning, missile-defense and space-surveillance operations for the United States and NATO.

The new agreement is expected to reverse part of that long-term reduction.

Trump announces two major bases

During his U.N. General Assembly address, Trump provided limited information about the planned expansion.

“We will immediately begin the process of developing a large military presence in the appropriate locations,” Trump said, including “building two very major military bases.”

The governments did not immediately provide locations, construction schedules, projected costs or expected troop levels for the two bases.

Greenland carries growing strategic value

Approximately two-thirds of Greenland lies within the Arctic Circle.

Melting sea ice has opened additional shipping routes and increased access to potentially valuable mineral deposits. Those developments have intensified interest from the United States, Russia, China and European countries.

Greenland’s location is also important for monitoring missiles and military activity across the Arctic and North Atlantic.

American officials have argued that an expanded presence is necessary to prevent strategic competitors from gaining military or commercial influence on the island.

Existing agreement already expanded access

Denmark’s parliament previously approved legislation allowing American military bases on Danish territory.

That measure expanded a 2023 defense agreement negotiated during President Joe Biden’s administration, which gave U.S. forces broad access to Danish air bases.

Trump had argued that the United States needed to “take Greenland” to prevent Russia or China from doing so.

Although he said he preferred to “make a deal,” Trump previously declared: “one way or the other, we’re going to have Greenland.”

The signed agreement offers the United States a wider military role without transferring sovereignty.

Governments portray agreement differently

Trump characterized the agreement as granting the United States extensive authority over Greenland’s security.

He wrote that the deal “gives the United States permanent control over security, and all other needs, in Greenland, completely addressing ALL of our many U.S. concerns.”

Denmark and Greenland emphasized different elements of the accord.

Frederiksen said the agreement “recognizes the sovereignty and territorial integrity of the Kingdom and the Greenlandic people’s right to self-determination.”

Greenlandic Prime Minister Jens-Frederik Nielsen said it recognizes Greenland’s interests while strengthening the security of Greenland, Denmark, the United States “and the Western alliance.”

Analyst says sovereignty crisis may be ending

Mikkel Runge Olesen, a senior researcher at the Danish Institute of International Studiessaid the agreement gives Denmark and Greenland the possibility of “ending the crisis without compromising on sovereignty.”

He said the United States received a “somewhat more favorable” arrangement than it had under the existing defense treaty.

However, Olesen warned that the diplomatic consequences of the confrontation could continue well beyond the agreement.

Relations between the three governments “are likely to be haunted by this long after Trump leaves office, and the crisis is likely to have significant and lasting negative impact on transatlantic relations more generally,” he said. “The lost trust will take decades to rebuild.”

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