Denmark authorized its armed forces to open fire on any attempted invasion of Greenland. The extraordinary measure reflects the escalation of a geopolitical crisis in the Arctic, where American President Donald Trump seeks to acquire the autonomous territory.
The American president articulates a vision of regional dominance that he calls the “Donroe Doctrine”, a contemporary version of the 19th century Monroe Doctrine. This policy seeks to exclude foreign powers from the Western Hemisphere and consolidate American control over vital resources.
The US offensive: Donroe Doctrine and strategic minerals
The White House justifies the measure as a national security priority. Trump claims the island is surrounded by Russian and Chinese ships and submarines. For Washington, direct control is the only way to guarantee the protection of the northern border against intercontinental ballistic missiles. American Vice President JD Vance reinforced this thesis by declaring that the missile defense system depends critically on the island.
This security justification, however, violates diplomatic norms and international treaties. The administration openly considers the use of military force as a viable option for annexation.
White House policy adviser Stephen Miller has publicly questioned Denmark’s right to control the territory. Miller argues that the world is governed by force and power rather than abstract legal norms. Trump describes the move as “the largest real estate transaction in history in terms of area.”
In this scenario, the United States also operates on the financial front to gain local support. According to information from the American newspaper Wall Street JournalAmerican authorities are discussing offering annual direct payments, estimated at around 5 thousand dollars per citizen, to gain popular support.
Washington is also considering proposing a free association agreement, similar to those it maintains with Pacific nations. This model would allow American military operations in exchange for commercial benefits and financial assistance.
American economic interest is driven by the need to control the production of strategic minerals. Greenland has vast reserves of lithium, cobalt, nickel and rare earths such as neodymium. Currently, China and Russia dominate global production of these essential inputs for defense technologies and smartphones. Possession of the island would give the United States an incalculable strategic advantage in the 21st century technology race.
Denmark’s response to Greenland and the risk to NATO
This logic, however, does not take into account the will of the Greenlanders. Despite financial promises, the Greenlandic people show clear resistance to the idea. Although the majority of the 57,000 inhabitants support Danish independence, they reject the idea of becoming Americans. Greenland’s Prime Minister Jens-Frederik Nielsen demanded an end to annexation fantasies and external pressure.
Local party leaders reiterate that Greenland’s future belongs exclusively to its people. Among the local population, there is fear that the historically achieved autonomy will be suffocated by the military needs of a superpower. Faced with this resistance, European diplomacy is now looking for alternatives to avoid a rupture with Washington.
The European reaction oscillates between shock and institutional concern. Danish Prime Minister Mette Frederiksen warned that any attempt at a forced takeover would result in the immediate end of the North Atlantic Treaty Organization (NATO) alliance.
The Danish Ministry of Defense has issued an extraordinary directive: its soldiers are allowed to open fire on invaders without waiting for orders from above. NATO, a pillar of Western security since 1945, faces an unprecedented situation: the possibility of one ally attacking another.
Diplomats in Brussels and Berlin are discussing offering the United States expanded access to mineral resources or strengthening NATO’s military presence under joint command. The intention is to meet Trump’s objectives without sacrificing Danish sovereignty. The American president, however, insists that territorial “ownership” is psychologically necessary for the success of his strategy. The international financial community is already evaluating the consequences of this stance.
What’s at stake in Greenland: geopolitics and markets
Betting markets already reflect the severity of the crisis. Online betting platforms such as Polymarket and Kalshi record millions of dollars in bets on the likelihood of the United States buying the territory before Trump’s term in office ends. Risk analysts point out that 2026 will be a decisive year for global institutions. Washington’s isolationist policy signals that the country is now committed to dismantling the international order it helped build.
The real test will be whether the democratic institutions of the United States and Europe can contain this escalation. American credibility, built over generations, is being tested by a strategy that prioritizes territorial control over alliances. For NATO, the challenge is no longer an external adversary, but the possibility of internal self-destruction.
