Trump says he has a deal giving the U.S. “permanent control” over Greenland’s security. Will the U.S., Denmark and Greenland sign the agreement by Sept 25?

The United States, Denmark and Greenland signed a trilateral security agreement on the sidelines of the United Nations General Assembly in New York on September 22, 2026, meeting the question's September 25 deadline. The deal grants Washington an expanded military presence on Greenland, including two additional U.S. military sites, and references cooperation tied to a proposed missile-defense initiative. It also restricts non-NATO countries from establishing bases on the island without agreement from all three parties and tightens screening of foreign investment from non-NATO and non-EU members, aimed at limiting Chinese and Russian influence in the Arctic.

The agreement followed months of escalating rhetoric from President Trump, who had repeatedly floated U.S. control over Greenland on national-security grounds, alongside parallel negotiations between Washington, Copenhagen and Nuuk to reach a compromise. Danish and Greenlandic officials framed the outcome as preserving Greenland's sovereignty and self-determination rather than ceding territory, while the U.S. described it as securing "permanent" control over the island's security posture.

The lone community vote on this question had predicted No, but the agreement was signed within the window, resolving the question Yes.