US to open two new military bases in Greenland under Arctic security deal

The United States, Denmark, and Greenland are set to sign a security agreement at the UN General Assembly to establish two new US military bases in Greenland. The deal, which reopens Cold War-era sites at Narsarsuaq and Mestersvig, follows months of diplomatic pressure from US President Donald Trump. While Trump claims the deal grants the US permanent control, Danish and Greenlandic leaders emphasize that the agreement respects local sovereignty and places Arctic security under NATO's collective watch.

US military expansion in Greenland

• ▪The new military sites to be established in Greenland under the security agreement between the US, Denmark, and Greenland, set to be signed at the UN General Assembly in New York on Tuesday, Sept 22, are Narsarsuaq on the southern coast and Mestersvig, an outpost on the east coast used by the Danish Sirius Dog Sled Patrol
• ▪The United States plans to establish two new military bases in Greenland under an agreement to be signed with Denmark and Greenland on September 22, 2026
• ▪The Greenland security agreement between the US, Denmark, and Greenland is scheduled to be signed by US President Donald Trump, Danish Prime Minister Mette Frederiksen, and Greenland Prime Minister Jens-Frederik Nielsen at the UN General Assembly in New York

Trump diplomatic pressure tactics

• ▪US President Donald Trump claimed on Truth Social that the Greenland security agreement between the US, Denmark, and Greenland, due Tuesday, gives the United States permanent control over security and all other needs in Greenland
• ▪US President Donald Trump's threats to acquire Greenland peaked in January 2026, triggering a diplomatic crisis within NATO and forcing Denmark and Greenland into negotiations
• ▪US President Donald Trump pressured Denmark and Greenland for months to acquire or control the semi-autonomous territory, refusing to rule out military or economic force

NATO Arctic security framework

• ▪Danish Foreign Minister Lars Lokke Rasmussen stated that the Greenland security agreement between the US, Denmark, and Greenland, due Tuesday, puts Arctic security under the collective watch of NATO rather than leaving it solely to the US and Denmark
• ▪A NATO spokesperson welcomed the Greenland security agreement between the US, Denmark, and Greenland set to be signed at the UN General Assembly, stating it would help advance security, stability, and cooperation in the Arctic region

Greenland sovereignty concerns

• ▪Danish Prime Minister Mette Frederiksen stated that the Greenland security agreement between the US, Denmark, and Greenland, due Tuesday, recognizes the sovereignty and territorial integrity of the Kingdom of Denmark and Greenland's right to self-determination
• ▪The Greenland security agreement between the US, Denmark, and Greenland, set to be signed at the UN General Assembly in New York on Tuesday, Sept 22, falls short of ceding control of Greenland to the United States, and Greenland remains a territory of Denmark
• ▪Greenland opposition lawmaker Erik Jensen stated he read the draft Greenland security agreement between the US, Denmark, and Greenland, due Tuesday, and felt reassured and not worried about the deal

Cold War base reopening

• ▪The United States plans to re-establish a presence at Narsarsuaq, where the US closed its Cold War-era Bluie West One military base in the 1950s
• ▪During the Cold War, the United States maintained 17 military installations and more than 10,000 personnel in Greenland, but currently only Pituffik Space Base remains active

Debatable claims

• ▪The expansion of US military bases in Greenland is necessary to secure the Arctic
• ▪The new security agreement compromises Greenland's sovereignty