Denmark's Prime Minister Mette Frederiksen has said "Europe won't be blackmailed" by Donald Trump's tariff threats over Greenland.

The US president has said he will impose a new 10% levy on goods from eight allied nations if they oppose his proposed takeover of the autonomous Danish territory.

Frederiksen and other European leaders issued a joint statement on Sunday, saying the tariffs risked "undermin[ing] transatlantic relations and risk a dangerous downward spiral".

On Monday, Trump said Nato had been "telling Denmark, for 20 years, that 'you have to get the Russian threat away from Greenland.' Unfortunately, Denmark has been unable to do anything about it. Now it is time, and it will be done!!!"

Trump insists Greenland is critical for US security and has previously said Washington would get the territory "the easy way" or "the hard way". He has not ruled out use of force, which has drawn widespread criticism.

The new tariffs - taxes on imports - would be imposed on Denmark, Finland, France, Germany, the Netherlands, Norway, Sweden and the UK, Trump said on Saturday.

He said an initial 10% tariff would come into force on 1 February "on any and all goods" sent to the US, but could rise to 25% in June.

The levies would "be due and payable until such time as a Deal is reached for the Complete and Total purchase of Greenland", he wrote on his Truth Social platform.

In their joint statement, the leaders of those eight countries reiterated their "full solidarity with the Kingdom of Denmark and the people of Greenland".

They also stressed their commitment to "strengthening Arctic security as a shared transatlantic interest" as members of the Nato military alliance.

"We stand ready to engage in a dialogue based on the principles of sovereignty and territorial integrity that we stand firmly behind," the statement reads.

Separately, Frederiksen wrote on Facebook: "We want to cooperate and we are not the ones seeking conflict. And I am happy for the consistent messages from the rest of the continent: Europe will not be blackmailed."

"It is all the more important that we stand firm on the fundamental values that created the European community."

Elsewhere on Sunday, UK Prime Minister Sir Keir Starmer said the threat of tariffs was "completely wrong".

Sir Keir, who so far has maintained a strong relationship with Trump, said the UK would be pursuing the matter directly with the White House.

Greenland is a sparsely populated but resource-rich. Its location between North America and the Arctic makes it well placed for early warning systems in the event of missile attacks and for monitoring vessels in the region.

US Treasury Secretary Scott Bessent on Sunday told NBC News' Meet the Press programme that "Greenland can only be defended if it is part of the US, and it will not need to be defended if it is part of the US".

"I believe that the Europeans will understand that this is best for Greenland, best for Europe and best for the United States," he said.

Speaking to the BBC World Service's Newshour programme, Norwegian Foreign Minister Espen Barth Eide said mutual respect for sovereignty is a "non-negotiable" principle of international law and co-operation.

"If we are to live in peace and if we are to be able to co-operate on shared problems, we have to start by the mutual recognition of each others sovereignty and territorial integrity," he added.

It is still unclear how the tariffs will affect those Trump has already imposed on the UK and EU. French President Emmanuel Macron, who is working to co-ordinate the European response to the tariff threats, said he would request that the EU activate its "anti-coercion instrument" if Trump does impose them.

The US president is due to speak at the World Economic Forum in Davos, Switzerland on Wednesday on the theme "how can we co-operate in a more contested world?" Macron, as well as the leaders of Germany and the EU, will also be attending the annual conference.

Canadian Prime Minister Mark Carney, who will also be there, said his country was "concerned by the recent escalation" and that it would be "significantly increasing Arctic security — strengthening our military and investing in critical infrastructure".

"Canada strongly believes that the best way to secure the Arctic is by working together within Nato," he also wrote on X.

Meanwhile, Nato chief Rutte has said he has spoken to Trump "regarding the security situation in Greenland and the Arctic".

"We will continue working on this, and I look forward to seeing him in Davos later this week," he added.

Public anger in both Denmark and Greenland at Trump's threats over Greenland appears undiminished. Demonstrations against Trump's takeover plans were held in Greenland's capital, Nuuk, on Saturday - before the tariff announcement - as well as in Danish cities.

These rallies coincided with a visit to Copenhagen by a delegation from the US Congress. Its leader, Democratic Senator Chris Coons, said Trump's rhetoric was "not constructive".

The island's representative to the US has said that the last time Greenlanders were asked if they wanted to be part of the US, in January 2025, only 6% were in favour of doing so, while 85% were against.

A recent poll suggests that most Americans also oppose US control of Greenland. A Reuters/Ipsos poll, which was released last Wednesday, indicated just 17% of Americans support the US taking Greenland, compared to 47% who said they opposed Trump's push to acquire the island. (BBC)

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