1951 – Under a 1951 defense agreement between Denmark and the United States, the U.S. gains the right to station troops in Greenland, establishing the Pituffik (Thule) base where more than 100 American personnel remain today [1].

2009 (constitutional) – Greenland’s constitution, adopted in 2009, bans the sale of Greenlandic land, creating a legal obstacle to any future transfer of territory to foreign powers [1].

Jan 20, 2026 – At the World Economic Forum in Davos, President Trump announces on Truth Social that he has reached a “framework” for a future Greenland and Arctic deal after talks with NATO Secretary‑General Mark Rutte, describing it as potentially great for the United States and all NATO allies [2].

Jan 20, 2026 – Danish Prime Minister Mette Frederiksen states that Denmark will not negotiate sovereignty over Greenland, insisting that only Denmark and Greenland can decide territorial matters and that NATO is aware of this non‑negotiable stance [2].

Jan 20, 2026 – Greenlandic Premier Jens‑Frederik Nielsen calls sovereignty a “red line,” saying he does not know the deal’s details and emphasizing that any concession would breach Greenland’s constitutional ban [1].

Jan 2026 – The New York Times reports, citing anonymous officials, that the proposed framework could involve Denmark ceding sovereignty over small Greenlandic areas for U.S. bases, modeled on the 1960 Cyprus arrangement where the UK retains sovereignty over base zones [1][2].

Jan 2026 – The Daily Telegraph, also citing unnamed sources, says the deal would designate sovereign base areas in Greenland, effectively making those parcels American territory [2].

Jan 2026 – Trump assures the Davos audience that the United States will not use force to seize Greenland, arguing that such action would undermine the trans‑Atlantic alliance while continuing to press for enhanced Arctic security arrangements [2].

Jan 2026 – NATO Secretary‑General Mark Rutte says Arctic security talks will be accelerated, with negotiations among the United States, Greenland, and Denmark moving quickly toward a target of substantive progress by the end of 2026 [2].

Jan 2026 – Denmark notes there is no immediate threat from Russia or China in the Arctic, while NATO allies signal increased security contributions, and Rutte adds that any framework would require such contributions [1].

Jan 2026 – Legal analysts note that any land‑deal must navigate Greenland’s constitutional prohibition on land sales, possibly using lease‑like arrangements or a Guantánamo‑Bay‑style long‑term control model to secure U.S. presence [1].