Denmark and Greenland say sovereignty remains intact as Trump claims permanent US security control
Greenland, Denmark and the United States are expected to sign a new Arctic security agreement during next week’s UN General Assembly gathering. The proposed pact could expand the American military presence in Greenland, but its text remains unpublished and parliamentary approval will be required before it enters into force.
Three governments, two accounts
US President Donald Trump announced the agreement on Friday, presenting it as giving Washington permanent control over Greenland’s security and the freedom to address American strategic requirements on the island.
The joint Danish-Greenlandic account was more restrained. In an official statement on the expected agreement, the two governments said it would strengthen security across the Arctic and North Atlantic while recognising the sovereignty and territorial integrity of the Kingdom of Denmark and the Greenlandic people’s right to self-determination.
That difference is significant. “Control” could suggest authority over decisions taken in Greenland, while Copenhagen and Nuuk describe a cooperative security arrangement that leaves sovereignty intact. Until the agreement is published, the precise relationship between those positions cannot be independently assessed.
The parties are expected to sign the document in New York. It will then be subject to what the Danish prime minister’s office described as the necessary national parliamentary procedures. The announcement therefore represents a political agreement in principle, not a treaty already in force.
An expanded American presence
Trump said the United States would begin planning a larger military presence in Greenland immediately. However, no public information has yet established how many personnel or installations would be involved, where they would be located, or how the expansion would be financed.
The United States already operates Pituffik Space Base in north-western Greenland. The installation supports missile warning, missile defence and space-surveillance operations. Its legal foundations lie in the 1951 defence agreement between Washington and Copenhagen, subsequently amended to give Greenland’s authorities a more formal role.
According to reporting on the emerging agreement, Danish and Greenlandic officials have responded with cautious optimism while stressing that their established political red lines must be respected. Those include continued sovereignty, territorial integrity and Greenlandic self-determination.
The forthcoming text will show whether the pact merely updates the existing defence framework or creates substantially broader American rights. It should also clarify whether any new military facilities would be under exclusive US control, joint command or another arrangement.
Greenland’s consent remains central
Greenland is a self-governing territory within the Kingdom of Denmark. Defence and foreign affairs remain closely connected to the Danish state, but decisions directly affecting Greenland require consultation with its government. Greenland’s parliament will also have an important scrutiny role as the agreement moves towards implementation.
Naalakkersuisut chairman Jens-Frederik Nielsen said the pact would recognise Greenland’s interests and place in international cooperation. That participation matters because Arctic strategy has often been discussed primarily through the priorities of larger states, despite its consequences for Greenlandic communities, land use, infrastructure and political autonomy.
The agreement follows months of tension after Trump repeatedly raised the possibility of bringing Greenland under US control. Denmark, Greenland and European leaders rejected any transfer of sovereignty, while remaining open to deeper security cooperation. Earlier European Times coverage examined how the dispute pushed sovereignty and economic pressure to the centre of Europe’s Arctic debate.
The unanswered questions
The published agreement will need to define what Washington means by a permanent arrangement and whether Greenland retains the power to review or withdraw from particular provisions. It should also explain how decisions on military construction, environmental protection, mineral investment and civilian infrastructure will be taken.
Costs remain another open issue. Trump said the arrangement would impose no cost on the United States, while also promising a substantial military expansion. Neither Denmark nor Greenland has publicly explained the financial division of responsibilities.
The pact could ease one of the most disruptive disputes between NATO allies by replacing territorial threats with negotiated security cooperation. Yet its durability will depend on more than the scale of the American presence. Parliamentary scrutiny, clear limits on authority and meaningful Greenlandic participation will determine whether the agreement strengthens collective security without weakening the sovereignty it is intended to protect.
