The US president used the Ankara summit to renew his claim that Greenland should be controlled by Washington, forcing an alliance built to defend members’ territory to confront pressure directed at one ally by another.
Donald Trump has again said Greenland should be controlled by the United States rather than Denmark, reopening the most internally disruptive sovereignty dispute facing NATO while allied leaders gather in Ankara to demonstrate unity.
Speaking during a meeting with Turkish President Recep Tayyip Erdogan, Trump described the Arctic territory as strategically important and repeated claims that Russian and Chinese ships threaten the island. Greenland and Denmark have consistently rejected any transfer of sovereignty.
The renewed demand at the NATO summit is particularly destabilising because both the United States and Denmark are founding members of an alliance organised around collective defence and respect for allied territory.
Security does not settle sovereignty
Greenland is strategically important. Its geography supports missile warning, space surveillance and control of approaches between North America and Europe. The United States already operates Pituffik Space Base under long-standing arrangements with Denmark.
Those facts provide a case for greater investment and military cooperation, not for transferring political control. Washington can negotiate expanded access, infrastructure and surveillance without questioning the right of Greenlanders to determine their future.
Trump’s formulation collapses the distinction between a security requirement and a sovereignty claim. It implies that the most powerful ally should control strategically valuable territory because it believes the current sovereign cannot protect it sufficiently.
Denmark faces pressure from its security guarantor
Copenhagen depends on the United States as NATO’s principal military power while being asked to resist a US claim over part of the Danish realm. That creates an alliance dilemma no external adversary could easily reproduce.
An aggressive Danish response risks worsening relations with Washington. A muted response could appear to compromise Greenlandic self-determination. Other European states must decide whether solidarity with Denmark requires confronting Trump publicly or containing the dispute through private diplomacy.
EU Global previously examined how Trump’s Greenland campaign revived fears of a wider transatlantic rupture. The Ankara intervention shows that the issue has survived earlier efforts to manage it and remains connected to NATO burden-sharing.
Arctic competition is real but the evidence matters
Russia maintains major military infrastructure in the Arctic and China has declared itself a near-Arctic stakeholder. Both seek access, resources and influence. NATO has strengthened surveillance and exercises in the High North in response.
Trump’s assertion that Greenland is surrounded by hostile shipping has not been supported by evidence presented publicly. Exaggerating the threat weakens the legitimate case for better Arctic domain awareness and allows allies to dismiss the security concern as a pretext for territorial ambition.
The durable response is a stronger allied posture agreed with Denmark and Greenland: sensors, airfields, ports, ice-capable vessels and infrastructure that benefits local communities as well as military access.
NATO unity has a sovereignty condition
Alliance credibility depends not only on Article 5 but on the assumption that members do not coerce one another over territory. If that assumption weakens, discussions of collective defence become harder to separate from unequal power inside the Alliance.
The dispute also gives Russia and China an information opportunity. Both can point to the contradiction between Western support for territorial integrity abroad and pressure over Greenland within NATO.
That does not make the US claim equivalent to Russia’s aggression against Ukraine. No American military operation against Greenland has occurred. It does mean that language from the US president has strategic consequences even when it is not accompanied by immediate action.
Ankara’s uncomfortable contradiction
NATO leaders came to Ankara to announce new procurement, reaffirm deterrence and persuade Washington that European allies are doing more. Trump’s Greenland remarks remind them that the Alliance’s internal political problem cannot be solved through arms contracts alone.
Denmark and Greenland can cooperate more deeply with the United States on Arctic defence without accepting American control. NATO can strengthen the High North without treating sovereignty as negotiable.
The essential line is therefore simple: security arrangements can change through consent; sovereignty belongs to the people and institutions concerned. Unless Washington accepts that distinction, Greenland will remain an alliance dispute created not by an adversary, but by NATO’s most powerful member.
