President Donald Trump announced on September 19 an agreement with Denmark and Greenland that expands the American security role on the Arctic island while leaving it, formally, part of the Kingdom of Denmark — an outcome well short of the acquisition he had pressed for since returning to office.
Trump described the deal on social media as one that gives the United States "permanent control over security, and all other needs, in Greenland." Denmark's prime minister, Mette Frederiksen, described the same text as one that "recognizes the sovereignty and territorial integrity" of Greenland and Denmark, and upholds both peoples' right to self-determination. Both descriptions can stand at once: what changes hands is security responsibility, not title.
What the agreement does
According to a State Department official cited by NPR, the text:
- bars military bases belonging to countries outside NATO;
- blocks Chinese and Russian military installations on the island;
- restricts investment by adversary states;
- preserves Greenlandic and Danish sovereignty and the right to self-determination.
Secretary of State Marco Rubio called it a "historic deal" and a "huge win," saying Greenland would "forever be part of the strategic defense area of North America." Greenland's prime minister, Jens-Frederik Nielsen, said the agreement recognizes "Greenland's interests."
Signed next week, then two parliaments
The three governments plan to sign during the United Nations General Assembly in New York next week. Signature is not the final step: the Danish and Greenlandic parliaments must both approve the text before it takes effect.
What the US already had there
The American military presence in Greenland is not new. Pituffik Space Base, in the island's northwest, is the only US installation there, operating under a defense treaty with Denmark signed in 1951. It handles missile warning and space surveillance, and sits close to the shortest flight paths between North America and Eurasia — the reason the position has mattered to US planners since the Cold War.
How it got here
Trump began pressing to acquire Greenland after returning to office last year, and at several points declined to rule out military force or economic pressure. The campaign strained relations with Denmark, a NATO ally, and drew criticism across Europe.
Imran Bayoumi, of the Atlantic Council, told NPR that the episode had damaged how the United States is seen by European partners, many of whom read the pressure as "a real attack on their sovereignty."
Reporting from NPR and ABC News (Australia).
