US To Reopen Cold War Base And Establish New Military Presence In Greenland As Arctic Security Deal Nears

JD GLOBAL MEDIA | SOUTH AFRICA

Published: 21 September 2026

WASHINGTON PREPARES TO EXPAND MILITARY PRESENCE IN GREENLAND

The United States is preparing to expand its military presence in Greenland by reopening a former Cold War-era installation in the south of the Arctic island and establishing a military presence at an eastern outpost currently used by Denmark's Sirius Dog Sled Patrol, according to people familiar with an agreement expected to be signed by the United States, Denmark and Greenland on Tuesday.

The planned expansion would involve Narsarsuaq, the former US installation known as Bluie West One, and Mestersvig, a remote military outpost on Greenland's east coast.

The three governments are expected to sign the new security agreement during the United Nations General Assembly in New York on 22 September. The precise text of the agreement has not yet been publicly released, and people familiar with the negotiations have said that some details will not be final until the document is signed.

The development marks a major change in the American military footprint on Greenland.

The United States currently maintains its principal military installation on the island at Pituffik Space Base, formerly known as Thule Air Base. The addition of two further locations would give Washington a broader geographic presence across Greenland at a time when the Arctic is receiving increasing attention from NATO members because of its strategic location, military routes, shipping lanes and wider geopolitical competition.

Denmark has said the new arrangement is intended to place greater responsibility for Arctic security within NATO, rather than leaving the issue solely to Washington and Copenhagen.

TWO LOCATIONS ARE AT THE CENTRE OF THE PLAN

The first location is Narsarsuaq, in southern Greenland.

Narsarsuaq was once home to the US military installation Bluie West One, which operated during the Second World War and Cold War periods before being closed by the United States in the 1950s.

The population around Narsarsuaq has since declined dramatically, with only a small number of people now living in the settlement.

The second location is Mestersvig, on Greenland's east coast.

Mestersvig is currently used by Denmark's Sirius Dog Sled Patrol, a specialised Danish unit that operates in Greenland's remote northeastern territory and contributes to Denmark's ability to maintain a military and governmental presence in difficult Arctic terrain.

The proposed American presence at Mestersvig would therefore add a US military dimension to an area that already has a Danish security role.

The precise size of the American presence at either site has not been publicly disclosed.

There has also been no public confirmation of the number of personnel, aircraft or equipment that would ultimately be stationed there.

Those details are expected to depend on the final agreement and subsequent implementation.

WHY GREENLAND MATTERS STRATEGICALLY

Greenland is strategically positioned between North America and Europe, making it important to the security architecture of the North Atlantic and Arctic regions.

Its location provides access to the northern approaches linking the Atlantic and Arctic Oceans.

For the United States and NATO, Greenland is also important because developments in the Arctic can affect air and maritime routes connecting North America and Europe.

The island's geographical position has long given it military significance.

During the Second World War, the United States established military facilities in Greenland to support North Atlantic operations.

During the Cold War, American military activity expanded considerably as Washington sought to monitor the northern approaches and detect possible Soviet military activity.

At the height of that period, the United States maintained 17 military installations and more than 10,000 personnel in Greenland.

Today, the American military footprint is considerably smaller, with around 150 US military personnel at Pituffik Space Base.

The planned reopening of additional sites would therefore represent a substantial expansion compared with the current post-Cold War arrangement.

THE ARCTIC HAS BECOME MORE IMPORTANT

The new agreement comes as the Arctic has become an increasingly important area of international security planning.

Climate change is reducing ice coverage in some Arctic areas, potentially changing patterns of shipping and resource activity.

At the same time, Russia maintains significant military infrastructure in the Arctic, while China has increased its economic and scientific interest in the region.

NATO members have consequently increased their attention to Arctic defence.

For Washington, Greenland provides a location from which American and allied forces can operate in the wider Arctic and North Atlantic environment.

For Denmark, Greenland's geography means that developments on the island are directly connected to the security of the Danish realm and the broader North Atlantic.

For Greenland itself, the issue is also connected to sovereignty, self-government and the territory's future political status.

GREENLAND REMAINS PART OF THE KINGDOM OF DENMARK

Greenland is a self-governing territory within the Kingdom of Denmark.

It has its own government and parliament and exercises substantial authority over domestic matters, while Denmark retains responsibility for areas including foreign affairs and defence under the constitutional arrangement.

That status is central to the current agreement.

The planned military expansion does not amount to a transfer of sovereignty over Greenland to the United States.

Danish and Greenlandic authorities have repeatedly said that any security arrangement must respect Greenland's territorial integrity and its right to self-determination.

That point has become especially important because President Donald Trump has previously argued that the United States should control Greenland.

His statements about acquiring the territory generated significant tension between Washington and Copenhagen and raised concerns within NATO about relations between allied governments.

The current agreement is instead being presented as a security arrangement that leaves Greenland within the Danish realm while expanding American military activity.

TRUMP'S EARLIER PUSH FOR CONTROL

The proposed military agreement follows months of pressure from Trump over Greenland.

The US president has repeatedly described Greenland as strategically important to American national security and has argued that the United States should have greater control over the territory.

At various points, Trump's statements about Greenland generated concerns in Denmark and among other NATO members because they raised questions about whether Washington might seek to alter the island's political status.

The pressure peaked earlier in 2026, contributing to a diplomatic crisis within the NATO alliance.

Denmark and Greenland subsequently entered negotiations with Washington aimed at reducing tensions while addressing American security concerns.

The new agreement appears to be the result of that diplomatic process.

WASHINGTON'S MILITARY GOALS

The United States has not publicly released the complete text of the agreement.

However, the planned reopening of Narsarsuaq and military presence at Mestersvig indicates that Washington intends to increase its ability to operate across Greenland.

A larger presence could provide additional logistical, surveillance and operational options in the Arctic.

The strategic value of the two locations is also different.

Narsarsuaq is located in southern Greenland and has an established history as a US military site.

Mestersvig lies on the remote eastern side of the island and is associated with Denmark's specialised Arctic patrol operations.

A presence at both locations would therefore provide access to different parts of Greenland's enormous territory.

The island is the world's largest island and has a landmass dominated by the Greenland ice sheet.

Its vast distances and harsh environment make logistics particularly important for any government seeking to maintain a sustained presence.

THE EXISTING PITuffik BASE

The proposed expansion would build on the United States' existing presence at Pituffik Space Base in northwest Greenland.

Pituffik is strategically important to American missile-warning and space-related activities.

The base is located far north of most Greenlandic communities and has historically played an important role in monitoring potential threats approaching North America.

The base also forms part of the broader US military and space infrastructure.

Adding facilities farther south and east would potentially broaden the geographical reach of American operations on the island.

The arrangement would therefore not represent the creation of an American military presence in Greenland from scratch.

Instead, it would expand an existing presence that has remained since the Cold War.

DENMARK SAYS NATO WILL HAVE A GREATER ROLE

Denmark has stressed that the agreement should be understood within the NATO security framework.

Danish officials say the arrangement places Arctic security under a broader NATO responsibility rather than treating Greenland as an issue solely between Washington and Copenhagen.

That distinction is politically significant.

NATO is a collective defence alliance involving the United States, Denmark and other European and North American countries.

Greenland's geographical position means that its security is already linked to the alliance's wider North Atlantic defence arrangements.

Denmark has also acknowledged that it needs to increase defence activity in the Arctic.

The new agreement therefore combines greater US military involvement with an effort to make Arctic security a more visible part of NATO's overall planning.

GREENLANDIC LEADERS HAVE SOUGHT ASSURANCES

Greenlandic authorities have been closely involved in discussions over the proposed agreement.

The island's political leadership has emphasised that its sovereignty and self-determination must be respected.

The issue is particularly sensitive because Trump's earlier comments about American control generated concern in Greenland.

Greenland's government has therefore sought clarity about the scope of any American military expansion.

The proposed arrangement is being presented by Danish and Greenlandic authorities as a security agreement rather than an acquisition of territory.

The distinction will remain important when the final text becomes public.

THE AGREEMENT HAS NOT YET BEEN FULLY DISCLOSED

Despite the announcement of an agreement in principle, significant details remain unknown.

The three governments have not yet released the full text.

Among the questions awaiting clarification are the size and nature of the US military presence, the duration of American access to the additional sites and the precise responsibilities of Denmark, Greenland and the United States.

The parties involved have indicated that the final details will be available once the agreement is signed.

That means some of the current information is based on people familiar with the negotiations rather than the final legal document.

It is therefore important to distinguish between what has been publicly confirmed and what remains subject to finalisation.

WHY NARSARSUAQ IS SIGNIFICANT

Narsarsuaq has a long American military history.

The US established Bluie West One during the Second World War as part of a network of bases supporting aircraft movements and North Atlantic operations.

The location remained strategically important during the Cold War.

Although the American military eventually withdrew, the infrastructure and geographical position continue to give Narsarsuaq potential strategic value.

Reopening the former facility would symbolically reconnect the United States with a location it used during an earlier period of intense Arctic competition.

It could also provide another logistical location for American forces operating in the region.

The small population around Narsarsuaq means that the military presence could have an important effect on the local community, although the scale of that impact will depend on the final size of the operation.

MESTERSVIG AND THE DANISH ARCTIC PATROL

Mestersvig has a different history.

The area is associated with the Sirius Dog Sled Patrol, which operates in some of the most remote parts of Greenland.

The patrol's mission includes maintaining a Danish military presence and asserting Danish sovereignty across remote areas of northeastern Greenland.

The territory is vast, difficult to access and subject to extreme weather.

The patrol therefore relies heavily on specialised Arctic capabilities.

A US military presence at Mestersvig would bring American forces into an area where Denmark already maintains a specialised sovereignty and surveillance role.

The arrangement could provide opportunities for greater cooperation between Danish and American personnel, although the exact operational structure has not yet been disclosed.

THE RUSSIA FACTOR

Russia is an important part of the broader Arctic security picture.

Moscow maintains extensive military capabilities in its Arctic territories.

Russia's northern coastline stretches across a huge section of the Arctic, and the country has invested heavily in bases, airfields, ports and other infrastructure.

NATO members have consequently paid increasing attention to Russia's Arctic activities.

The United States and its European allies are seeking greater awareness of developments across the region.

Greenland's position makes it relevant to that effort.

The planned military expansion is therefore occurring within a broader shift in Arctic defence planning rather than being solely a bilateral US-Denmark initiative.

CHINA'S ARCTIC INTEREST

China is also increasingly active in the Arctic through scientific research, commercial activity and diplomatic engagement.

Although China is not an Arctic coastal state, Beijing has described itself as a "near-Arctic" state and has sought partnerships involving Arctic research and infrastructure.

The United States and European governments have expressed concern about potential strategic implications of Chinese investment in sensitive Arctic infrastructure.

The new Greenland agreement is expected to restrict the ability of non-NATO adversaries to establish military or strategically sensitive infrastructure on the island.

Those provisions have been linked to wider concerns about China and Russia's possible future involvement in Greenland.

GREENLAND'S NATURAL RESOURCES

Greenland also possesses substantial mineral resources, adding an economic dimension to its strategic importance.

The territory contains deposits of minerals that have attracted international interest as countries seek supplies for modern technologies, energy systems and defence industries.

However, the presence of natural resources does not automatically mean that they can be developed commercially.

Greenland's harsh climate, limited infrastructure, high operating costs and environmental concerns present major challenges.

The territory's political status also means that questions about resource development are closely linked to Greenlandic self-government.

The United States has increasingly viewed the Arctic as an area where security, infrastructure and economic interests overlap.

THE SOVEREIGNTY QUESTION

The sovereignty issue remains central to the entire discussion.

Greenland is not becoming an American territory under the proposed agreement.

Denmark continues to retain sovereignty over the territory, while Greenland has its own elected government and parliament under its self-government arrangement.

The agreement is instead expected to provide the United States with expanded military access and responsibilities.

That distinction is important because Trump's earlier statements about American control created concerns that the United States might seek to change Greenland's political status.

The current diplomatic arrangement represents a different approach: expanded American military involvement while leaving sovereignty formally unchanged.

A SHIFT FROM ACQUISITION TO SECURITY COOPERATION

The emerging agreement therefore appears to represent a shift in the way the Greenland question is being handled.

Earlier discussions focused heavily on whether the United States should acquire or control Greenland.

The current negotiations focus instead on military cooperation, Arctic security and American access.

This allows Washington to pursue some of its strategic objectives without formally changing Greenland's sovereignty.

For Denmark and Greenland, the arrangement provides a way to respond to American security concerns while maintaining the existing constitutional relationship.

Whether the agreement ultimately resolves the deeper political tensions will depend on how it is implemented.

NATO'S ROLE COULD GROW

The agreement could also result in a stronger NATO presence in the Arctic.

Denmark has said the arrangement brings Arctic security more clearly under NATO's umbrella.

That could encourage other NATO members to contribute more resources to Arctic surveillance, exercises, infrastructure and defence planning.

Countries such as Norway, Canada, Iceland, Finland and Sweden already have major strategic interests in the Arctic and North Atlantic.

A more coordinated NATO approach could therefore extend beyond Greenland.

The Arctic is becoming increasingly connected to European security planning, particularly as climate change changes the region's accessibility and Russia maintains a substantial military presence.

THE ENVIRONMENTAL DIMENSION

Any expansion of military infrastructure in Greenland will also have environmental implications.

The island's environment is highly sensitive, and much of its territory is covered by ice.

Military construction, transport, fuel storage and aircraft operations can have environmental consequences in Arctic conditions.

The history of Cold War military infrastructure has also left environmental concerns at some former installations.

Any new development would therefore have to operate within Greenlandic and Danish environmental rules and whatever conditions are established under the new security agreement.

The environmental dimension is likely to remain important as details of the planned installations become public.

WHAT HAPPENS NEXT

The immediate next step is the planned signing ceremony in New York on 22 September.

The United States, Denmark and Greenland are expected to formally sign the agreement during the UN General Assembly.

The signing should provide more information about the legal structure of the arrangement.

After that, implementation would be required.

Infrastructure would need to be assessed, military requirements determined and arrangements established between American, Danish and Greenlandic authorities.

The scale and speed of the expansion will depend on those processes.

PARLIAMENTARY AND POLITICAL QUESTIONS

The agreement will also face political scrutiny in Denmark and Greenland.

Because the arrangement concerns defence, sovereignty and military activity, elected representatives are expected to examine the details.

The precise ratification or approval requirements will depend on the final legal form of the agreement.

Greenlandic politicians are likely to pay particular attention to provisions affecting self-government and the territory's ability to determine its own future.

Danish politicians will also examine how the agreement affects Denmark's responsibilities within NATO and its constitutional relationship with Greenland.

The United States will meanwhile focus on whether the agreement delivers the military access and security arrangements Washington has sought.

A NEW PHASE FOR GREENLAND

The planned reopening of Narsarsuaq and expansion into Mestersvig represents more than a simple return of American personnel to former military locations.

It signals renewed strategic interest in Greenland after decades in which the American military presence was concentrated largely at Pituffik.

The Arctic environment is changing.

Military competition is increasing.

New shipping possibilities are emerging.

NATO is paying greater attention to its northern flank.

And Greenland's geographical position places it at the centre of those developments.

The agreement therefore has implications well beyond the three parties signing it.

WHAT THE DEAL DOES NOT CHANGE

Despite the planned military expansion, several fundamental facts remain unchanged.

Greenland remains within the Kingdom of Denmark.

Greenland retains its self-government institutions.

Denmark remains responsible for the territory's defence and foreign affairs under the existing constitutional framework.

The United States is not acquiring Greenland as part of the agreement.

Instead, Washington is securing a larger military role through an arrangement negotiated with Denmark and Greenland.

The final agreement will determine how that role is structured.

THE BROADER ARCTIC SECURITY PICTURE

The Greenland development comes at a time when global security concerns are already stretching international alliances.

The United Nations General Assembly is meeting in New York while conflicts in the Middle East, Ukraine and other regions continue to dominate international diplomacy.

Against that backdrop, Arctic security might appear less urgent than active wars elsewhere.

Yet governments increasingly view the Arctic as a region where future strategic competition could intensify.

The United States, Russia, Canada, Denmark and other NATO members have significant security interests in the region.

Greenland sits at an important geographical point within that system.

The new agreement therefore reflects a longer-term security calculation as well as the immediate diplomatic issues surrounding Trump's earlier demands.

A CAREFULLY WATCHED AGREEMENT

The coming days are likely to provide greater clarity.

The signing ceremony will reveal the formal terms.

The governments involved will then have to explain how the agreement will operate in practice.

Greenland's political leadership will be watching the implementation closely because the territory's self-government and sovereignty have been central to the negotiations.

Denmark will need to balance its responsibilities towards Greenland with its alliance commitments.

Washington will need to demonstrate how the expanded military presence contributes to the security objectives identified by the administration.

The arrangement's ultimate significance will therefore depend not only on the signing but also on what happens afterward.

THE RETURN OF AMERICAN FORCES TO FORMER COLD WAR LOCATIONS

The planned reopening of Bluie West One is particularly notable because it connects today's Arctic security concerns with the history of the Cold War.

The United States once maintained a much larger military network across Greenland.

That network was reduced substantially after the Cold War ended.

Now, decades later, Washington is preparing to return to at least one former installation while establishing a presence at another strategic location.

The development illustrates how geopolitical priorities can change over time.

During the Cold War, the primary concern was Soviet military power.

Today, the Arctic security environment involves Russia, NATO competition, strategic shipping routes, infrastructure, emerging technologies and concerns about Chinese activity.

The geographic importance of Greenland, however, has remained.

WHAT THE WORLD WILL BE WATCHING

The most immediate questions surrounding the agreement are straightforward.

How large will the American military presence become?

What exactly will US forces be permitted to do at Narsarsuaq and Mestersvig?

How will Danish and Greenlandic authorities participate?

What role will NATO have?

What restrictions will apply to non-NATO countries?

How will environmental concerns be handled?

And how will the arrangement affect Greenland's self-government?

The final text is expected to provide answers to at least some of those questions.

Until then, claims about the precise scope of the agreement should be treated cautiously because the governments have not yet published the full document.

A STRATEGIC AGREEMENT WITH WIDER CONSEQUENCES

The United States, Denmark and Greenland are moving towards a security agreement that could reshape America's military footprint in the Arctic.

The reopening of Narsarsuaq and the planned presence at Mestersvig would give the United States access to two additional locations beyond its existing base at Pituffik.

Denmark says the arrangement will strengthen NATO's role in Arctic security and respect Greenland's sovereignty.

Greenlandic authorities have likewise emphasised the importance of maintaining self-government and territorial integrity.

For Washington, the agreement provides an expanded military presence without requiring a transfer of sovereignty.

For Denmark, it creates a framework for closer American involvement in Arctic defence while keeping Greenland within the Danish realm.

For Greenland, the central issue will be ensuring that expanded military cooperation does not undermine its constitutional status or aspirations for greater self-determination.

The agreement also comes after months of political tension generated by Trump's demands for greater American control over Greenland.

Whether the new arrangement permanently settles those tensions will depend on how the agreement operates in practice.

For now, the planned signing marks a new stage in the long history of American military involvement in Greenland.

A former Cold War base is set to return to the strategic map, a remote Danish Arctic outpost is preparing for a new American role, and NATO is being asked to take a larger part in securing the region.

The Arctic is consequently becoming an increasingly important part of the global security landscape.

JD GLOBAL MEDIA will continue monitoring the Greenland security agreement, its formal signing, the response from Denmark and Greenland, and the implications for Arctic and NATO security.