US President Donald Trump has signed a new Greenland security deal, expanding the United States' military presence in the Arctic. The agreement, signed on Tuesday, September 22, 2026, with Danish Prime Minister Mette Frederiksen and Greenland PM Jens-Frederik Nielsen, permits the modernisation and enlargement of the Pituffik Space Base and the establishment of new defence areas at Narsarsuaq and Mestersvig. This move solidifies a global border regime, where some nations assert control over vast territories while human movement is increasingly criminalised.
The deal, shared by the Danish Foreign Ministry, grants the US "free access to and movement between" these defence areas across Greenland. This includes territorial waters, by land, air, and sea. American aircraft may also fly over and land in any territory on the island, the agreement states. Such expansive freedom of movement for military forces stands in stark contrast to the deadly restrictions imposed on migrants seeking safety and opportunity across European borders.
Militarizing the Arctic Frontier
President Trump previously stated that the deal would see Washington take "permanent control" of Greenland's security. Just five days ago, on Friday, September 18, 2026, he posted on Truth Social: "From now on, no U.S. adversary can EVER have a base in Greenland, have a military presence in Greenland, or make sensitive investments in Greenland, without our express written approval." This rhetoric of absolute control over territory and resources mirrors the logic of Fortress Europe, which seeks to seal off the continent from those deemed 'undesirable'.
Both Frederiksen and Nielsen welcomed the agreement, despite it falling short of Trump's earlier desire to seize the territory outright. Frederiksen claimed the deal "strengthens our common security in the Arctic and the North Atlantic Area." Nielsen echoed this, stating it was "to the benefit of us all." These statements frame militarisation as a benefit, obscuring the broader implications for global power dynamics and the increasing securitisation of all spaces.
The Logic of Permanent Control
The agreement also reaffirms the "sovereignty and territorial integrity of the Kingdom of Denmark" and recognises Greenland's "right to self determination." Yet, the US assertion of "permanent control" over security raises questions about the true nature of this sovereignty. The US Department of Defense's northernmost installation, Pituffik Space Base, is already operational on the island. It's used for missile warning, missile defense, and space surveillance missions, according to the US Space Force. This expansion further entrenches a military-first approach to international relations, where strategic control takes precedence.
At the height of the Cold War, the US reportedly maintained 17 military facilities and over 10,000 troops on Greenland. This new agreement marks a significant re-escalation of military presence in a region increasingly vital due to climate change and resource competition. The militarisation of the Arctic, driven by a perceived need for national security, contributes to a global environment where borders are hardened, and the movement of capital and military power is privileged over the fundamental human right to move and seek safety.