A tripartite agreement expands the US presence in Greenland and rearranges Arctic security

Greenland is entering a new phase in its security arrangements, after the United States, Denmark, and the island’s government signed an agreement that allows the expansion of the American military presence, and transfers the months-long crisis over the future of the region to a new framework based on strengthening defense cooperation in the Arctic.

US President Donald Trump signed the agreement alongside Danish Prime Minister Mette Frederiksen and Greenlandic Prime Minister Jens Frederik Nielsen, during the United Nations General Assembly meetings in New York on September 22, 2026.

The agreement paves the way for the establishment of two additional American military sites, and expands the possibility The use of American aircraft and ships of the lands and waters surrounding the island, and also allows the establishment of components of the “Golden Dome” missile defense system, at a time when the strategic importance of the Arctic is increasing.

US presence expands in Greenland

The United States already owns the Pituffik Space Base in northwest Greenland, while the agreement opens the way for the addition of two sites at Narsarsuaq and Mestersvig.

Narsarsuaq was used as an air base during the Cold War, while the Mestersvig site is now used by the Danish Special Forces Sirius Dog Sled Patrol unit.

This expansion gives Washington a larger military structure in a region that enjoys special importance because of the location of Greenland between the Arctic and North America, and the passage The shortest route between Europe and North America is through the region.

The agreement also allows the United States to establish the Golden Dome system to defend against ballistic missile threats, adding a new dimension to the island’s role within the American defense structure in the north.

The annexation crisis turns into a security agreement

The agreement comes after months of tension between Washington, Copenhagen, and Nuuk, following Trump’s demand to acquire Greenland and turn it into an American territory, linking this trend to the increasing Russian and Chinese presence in the Arctic region.

These demands led to a diplomatic crisis within NATO, after which Denmark and Greenland entered into intense negotiations with the United States.

The agreement is presented What is new is a different formula for the relationship, based on expanding US military capabilities inside the island within arrangements agreed upon between the three parties, while continuing to positionGreenland as a semi-autonomous region within the Kingdom of Denmark.

Frederiksen stressed that the agreement respects Greenland’s right to self-determination, while Nielsen indicated that relations with the United States need a process to rebuild confidence after the previous crisis.

NATO strengthens its presence in the Arctic

The agreement places NATO in a key position within the new security arrangements, as the Prime Minister of Greenland stressed the importance of maintaining the alliance’s strength in the Arctic region and its role in protecting its security.

The agreement also prevents non-NATO member states from establishing military facilities inside the island. It makes security cooperation between the United States, Denmark, and Greenland part of a broader network of Western alliances in the region.

This path intersects with the seventeenth goal of the Sustainable Development Goals, which is concerned with establishing partnerships to achieve the goals, from the standpoint of the importance of institutional cooperation between countries in managing cross-border issues. In the case of the Arctic, this cooperation is linked to maintaining channels of dialogue and building clear arrangements to manage overlapping security interests.

Resources enter the agreement equation

Natural resources represent another factor in Greenland’s growing importance, as the island possesses extensive resources that have made it the focus of economic interest in addition to its military and geographical value.

The agreement includes restrictions on some foreign investments in sectors considered sensitive, and from Among them are critical infrastructure and resource extraction, and controls limit the ability of investors from countries outside NATO, its partners, and the European Union to have significant influence within these sectors.

This means that the new arrangements go beyond military bases to the question of who can invest in the island’s strategic assets and resources, increasingly linking Arctic security to the economy, supply chains and control of sensitive infrastructure.

Agreement based on arrangements dating back to 1951

The agreement amends the 1951 defense treaty, which for decades formed the legal basis for the US military presence in Greenland.

It also allows Washington to request additional sites in the future according to a mutual agreement, and gives its planes and ships a wide range of movement across the island’s territory. and its territorial waters.

This represents the largest major expansion of the US military structure inside Greenland since the Cold War, when the United States operated 17 facilities and employed more than 10,000 people on the island.

The agreement needs to be approved by the parliaments of Denmark and Greenland before completing its course, which makes legislative institutions part of determining the final form of the new arrangements.

Self-determination remains at the heart of the new arrangements

The agreement carries an institutional dimension that goes beyond military arrangements, because the future of Greenland is also linked to the right of its residents to determine the political course of the region, a point that the leaderships of Denmark and Greenland were keen to highlight when signing the agreement.

This aspect intersects with the sixth goal Ten of the Sustainable Development Goals are concerned with peace, justice and strong institutions. Sustainable management of international conflicts is linked to the presence of institutions capable of negotiating, respecting legal frameworks, and involving concerned parties in decisions that affect their future.

At the same time, Mikkel Vedbe Rasmussen, professor of political science at the University of Copenhagen, believed that the agreement may end the current crisis, while the possibility of future disputes remaining if it becomes a framework for additional demands or concessions, is an assessment that reflects a continued state of caution about the development of the relationship between the three parties.

Greenland faces new balances in the Arctic

In conclusion, the agreement redraws Greenland’s position within the Arctic equation, where military interests intersect with natural resources, infrastructure, and international alliances in a region that is increasingly Its strategic importance.

The agreement also transforms months of diplomatic confrontation into institutional arrangements that define spaces for military presence, investment, and cooperation between the parties, while keeping self-determination a key part of the discussion about the island’s future.

In light of these developments, Earth Defenders Foundation believes that the sustainability of security in the Arctic is linked to the ability of new agreements to transform international competition into clear rules that respect the right of local communities to determine their future, and balance security requirements, resource management, and economic interests. The broader value of the Greenland Agreement will appear in its ability to build long-term institutional stability in a region where the strategic interests of major powers are increasing.