On September 22, the United States, Denmark, and Greenland signed an agreement to amend and supplement their 1951 defense treaty. The new pact reflected updated defense arrangements among the three parties.
On 22 September 2026, reporting highlighted US ambitions to establish military bases in Greenland, noting that previous Cold War-era attempts left behind abandoned radar stations and nuclear waste. The strategic interest reflects renewed US focus on Arctic positioning.
The United States, Denmark, and Greenland signed a new security agreement on 2026-09-22 at the United Nations General Assembly in New York, expanding the U.S. military presence in the Arctic region. The signing took place at 10:30 a.m. ET during the General Assembly session.
On September 21, 2026, US Ambassador to Belgium Bill White announced that Washington, Copenhagen, and Nuuk had resolved their dispute over Greenland's security status, ending a transatlantic row. The agreement settles Trump administration concerns about Greenland's strategic position.
By September 20, 2026, President Trump announced that the United States had secured a deal with Denmark for permanent control over Greenland's security arrangements. Trump posted on Truth Social that the agreement was set to be signed during the UN General Assembly meeting in New York, framing it as preventing non-NATO states from establishing bases on the island.
The United States and Denmark are negotiating an agreement concerning Greenland, with reports as of September 19, 2026 indicating both Greenland and Denmark have clarified that the deal will not involve the cession of sovereignty. The agreement reportedly focuses on strategic access and cooperation.