British Prime Minister Sir Keir Starmer delivered a forceful rebuff to United States President Donald Trump in the House of Commons on Wednesday, declaring that he “will not yield” to pressure from Washington over the future of Greenland.

Starmer’s intervention marks one of his firmest public disagreements with the US administration.

He accused Trump of attempting to coerce the United Kingdom and other European allies by threatening tariffs if they do not align with his calls for American control of the vast Arctic territory, which is an autonomous part of the Kingdom of Denmark.

Trump had linked his Greenland ambitions with broader strategic concerns and even criticised the UK’s foreign policy decisions on other issues in remarks aimed at weakening allied resolve.

Starmer stressed that any decision about Greenland’s future must be determined by its people and Denmark, reaffirming the principle of self-determination that underpins relations between the UK, Denmark and their NATO allies.

In rejecting tariff threats, the prime minister said that Britain would uphold its principles and that coercive tactics from an ally were “completely wrong.” He also addressed recent criticism from Trump over the UK’s agreement to transfer the Chagos Islands to Mauritius, saying that attempts to connect that matter with the Greenland issue were intended to weaken his position.

The diplomatic row has drawn broader international attention.

Other European leaders have similarly reaffirmed support for Danish sovereignty and Greenland’s right to choose its own path, while also expressing concern over the tone and substance of Trump’s approach.

At the same time, Trump clarified at the World Economic Forum in Davos that he would not use military force to acquire Greenland, though he reiterated his desire to pursue legal means to secure American interests in the Arctic amid geopolitical competition.

In response to the escalating dispute, Starmer announced plans to host Danish Prime Minister Mette Frederiksen in London to reaffirm mutual commitments to sovereignty and shared values.

The meeting is expected to emphasise cooperation within NATO and common approaches to Arctic security.

Meanwhile, significant public demonstrations in Denmark and Greenland have underscored popular resistance to external pressure, with leaders in Nuuk and Copenhagen asserting that “Greenland is not for sale” and affirming their commitment to democratic processes and national autonomy.

Starmer’s stance reflects wider UK support for international norms of sovereignty and self-determination at a time of heightened geopolitical contest, and it comes alongside efforts by Western allies to navigate relations with the US administration while defending shared principles in strategic Arctic affairs.