United States and Denmark agree on Greenland military security arrangement

The United States, Denmark, and Greenland announced a new security agreement on September 18, 2026. It gives the U.S. permanent military access to Greenland, including the right to base troops and fly aircraft over the territory. Trump said the deal also gives the U.S. control over other key needs in Greenland. The agreement blocks China, Russia, and other non-NATO countries from building military bases there. It also stops U.S. adversaries from making certain investments in Greenland without American approval. Trump said the deal costs the U.S. nothing. Leaders from Denmark and Greenland both expressed support for the arrangement. NATO said it welcomes the agreement. All three parties were expected to sign the deal formally the following week at the United Nations General Assembly.