US, Denmark, and Greenland agree on perpetual security and basing pact

Trilateral security pact announced

Donald Trump announced an agreement between the United States, the Kingdom of Denmark, and Greenland that grants Washington perpetual control over security matters on the Arctic island. The agreement, disclosed by Trump on Truth Social, is intended to resolve long-standing American strategic concerns in the Arctic and North Atlantic regions. Danish Prime Minister Mette Frederiksen confirmed that the trilateral text is completed and that the three administrations plan to sign the accord in New York. According to the Danish government, the formal signing will occur during the upcoming United Nations General Assembly session. Danish authorities stated that the treaty will officially enter into force once standard parliamentary ratification procedures are completed in Copenhagen.

“For over 100 years, presidents knew the strategic importance of Greenland, but none of them was able to do anything about it. I am proud to be the president who permanently and definitively handled this very important situation.”

Basing rights and foreign restrictions

The framework grants the United States authority to immediately initiate the deployment of an expanded military presence across suitable sections of Greenland. Trump stated that the arrangement will not impose extra financial costs on American taxpayers and pledged to cooperate directly with local residents on island construction and economic development. The terms explicitly bar foreign adversaries from building military installations, maintaining troops, or conducting sensitive commercial investments in Greenland without explicit written authorization from Washington. Frederiksen emphasized that the document formally recognizes the sovereignty and territorial integrity of the Kingdom of Denmark while upholding the Greenlandic population's right to self-determination.

“We are pleased to be one step away from concluding an agreement that ensures and strengthens the security of Greenland, the Kingdom of Denmark, the United States, and the Western alliance. This agreement recognizes Greenland's interests and our place in international cooperation.”

Diplomatic dispute and strategic motives

The negotiation resolves months of diplomatic strain that began near the start of Trump's second presidential term. Trump had consistently argued that Greenland occupied crucial strategic terrain and should fall under Washington's security umbrella rather than Copenhagen's, claiming Denmark contributed negligible funds to local defence. In January 2026, Trump stated publicly that the United States needed to acquire Greenland and did not rule out using military force, an approach that NATO Secretary General Mark Rutte sought to deter. Although Danish and Greenlandic leaders initially rejected any cession of control, the parties negotiated a mutual security agreement that aligns the island with Western defence priorities.

Ratification and regional implementation

The three governments plan to complete the formal signing ceremony on the sidelines of the United Nations General Assembly in New York next week. Greenlandic Premier Jens-Fredrik Nielsen described the accord as a development that benefits Greenland, Denmark, the United States, and Western allies alike. Following the signing, the text will move to the Danish parliament to undergo formal scrutiny and constitutional approval before implementation begins. Once ratified, the United States intends to proceed with stationing forces across the territory while enforcing screening rules against foreign military and strategic investments.