Trump Signs Trilateral Security Deal with Denmark and Greenland

Baltimore, MD, September 22, 2026 —

President Donald Trump has signed a trilateral security agreement involving the United States, Denmark, and Greenland. The signing ceremony took place at the United Nations General Assembly in New York.

This newly established accord is set to facilitate an expansion of United States military infrastructure and security control within Greenland. The agreement outlines provisions for new defense areas to be developed and implemented. Furthermore, it includes measures for restricting investments by entities identified as U.S. adversaries in Greenland.

Officials involved in the discussions and the signing of the agreement have stated that the terms are designed to respect Greenland’s sovereignty. The full details regarding the scope of expanded military infrastructure and the specific nature of new defense areas were not elaborated upon in the provided information. Similarly, the exact entities or countries considered U.S. adversaries in the context of investment restrictions were not specified.

The agreement marks a formalization of security cooperation between the three parties. The United States has historically maintained military presence and strategic interests in Greenland, particularly related to early warning systems and Arctic domain awareness. This deal appears to build upon and formalize those existing frameworks.

The context of the signing at the United Nations General Assembly suggests a broader diplomatic setting, though the specific implications for international relations beyond the three signatories were not detailed. The duration of the agreement and its specific implementation timeline were also not provided.

Story summarized from the original created by Callum Sutherland on time.com, see more information here.