The United States and Denmark have announced a surprise security agreement over Greenland, a move that follows months of negotiations and repeated expansionist ambitions voiced by US President Donald Trump. The pact, still pending signature, is set to be formalized next week in New York during the United Nations General Assembly. While Trump has characterized the deal as a «victory» for the United States, officials in Copenhagen and Nuuk have offered more cautious assessments, emphasizing shared security benefits without confirming any fundamental shift in sovereignty.
At the heart of the uncertainty is how the new agreement differs from the 1951 defense treaty between Washington and Copenhagen, which remains in force and already grants the US broad military latitude on the island. Petter Viggo Jakobsen, a professor at the Royal Danish Defence College, said there is «not much new under the sun,» noting that the US already has extensive possibilities for military presence in Greenland. He cautioned that Trump's announcement of an immediate increase in troop numbers does not necessarily mean new rights have been granted. Currently, the US maintains one permanent military base on Greenland, the Pituffik Space Base, with around 150 personnel. Danish media have reported that negotiations are underway for three additional military facilities.
Trump claimed on his Truth Social platform that the agreement grants «permanent control over security and all other US needs in Greenland,» with no expiration date and valid indefinitely. This clause has raised concerns for Ulrik Pram Gad, a senior researcher at the Danish Institute for International Studies specializing in Arctic geopolitics. He warned that granting the US certain unconditional rights forever could be controversial, depending on how the text is formulated. Both Danish Prime Minister Mette Frederiksen and Greenlandic Prime Minister Jens-Frederik Nielsen stressed that the deal recognizes the sovereignty of the Kingdom of Denmark and Greenland's right to self-determination.
One of the most significant potential innovations, according to experts, is a possible US role in overseeing foreign investments in Greenland. Pram Gad suggested the agreement might include a mechanism, formal or informal, giving Washington a say in evaluating investments. This points to concerns over China's interest in strategic sectors such as mining and infrastructure in the Arctic, though Beijing's actual presence on the island remains limited and several projects have stalled. Pram Gad fears such a mechanism could, in practice, limit Greenland's ability to decide on its own investments, directly affecting its sovereignty.
Another unresolved issue is what compensation Greenland might receive in exchange for the US military presence. Pram Gad noted that from a Greenlandic perspective, American bases are not necessarily seen as a guarantee of protection. «I don't think anyone in Greenland particularly thinks their island needs defense,» he said. Instead, there are concerns about environmental protection and cleanup following a large number of environmental disasters. The lack of clarity on these points leaves the full implications of the agreement—for Greenland's autonomy, for regional security, and for the balance of power in the Arctic—still to be determined.