Jean-Luc Mélenchon, leader of the radical left France Unbowed party, said Europe was paying the price for its failure to stand up to President Trump when he imposed tariffs on America’s trade partners last year.
He also accused Ursula von der Leyen, president of the European Commission, of caving in to pressure from the US.
He said on X: “Europe is undergoing another test from Trump. Von der Leyen already gave in this summer. Servility always leads to more provocation and submission.”
Ulf Kristersson, the prime minister of Sweden, has said he is in “intensive discussions” with the UK and Norway over a co-ordinated response to the threatened tariffs.
He said on social media that his country would not be “blackmailed” by Trump over the sovereignty of Greenland.
He said: “Only Denmark and Greenland decide on issues concerning Denmark and Greenland. I will always stand up for my country, and for our allied neighbors. This is an EU issue that affects many more countries than those now being singled out.
“We will not let ourselves be blackmailed.”
Whether President Trump can legally impose these higher tariffs is far from certain. He is awaiting a Supreme Court decision on whether his sweeping use of the power to date complies with federal law.
The tariffs are being challenged by a number of small businesses and a group of US states. They argue the president exceeded his authority in imposing the levies over the past year.
Trump used the International Emergency Economic Powers Act, which grants presidents additional economic powers in times of war or national emergency.
If the court rules against the administration, the United States could have to refund some of the billions of dollars it has already collected.
Trump said on Monday the refunds would be “almost impossible for our country to pay”.
António Costa, president of the European Council, said the EU would always defend international law in the face of President Trump’s threatened additional tariffs.
He said he was coordinating an EU-wide response.
“What we can say is that the European Union will always be very firm in defending international law, wherever it may be, which of course begins within the territory of the member states of the European Union,” he said at a press conference on Saturday evening.
He added: “For now, I am co-ordinating a joint response from the member states of the European Union on this issue.”
A former prime minister of Sweden has said the EU should react with strength to the latest tariff threats.
Carl Bildt, now chair of the European Council on Foreign Relations, a think tank, said it was “a crystal clear violation” of trade agreements between the EU and the US and between the UK and the US.
He said: “If this goes into force the EU reaction must be as clear. To play soft is hardly an option.”
When Britain and other European leaders decided to send a token military force to Greenland this week to help defend the Arctic island, they appeared to think it would appease Donald Trump (Peter Conradi, Europe Editor, writes).
Instead, it seems to have had the opposite effect of antagonising the American president and spurring him into imposing tariffs on them. They had, he claimed, “journeyed to Greenland, for purposes unknown”.
European leaders were caught off guard by the speed of Trump’s move. Overnight, a vague threat from the president on Friday had turned into firm American policy, posing a dilemma for Sir Keir Starmer, and the leaders of Denmark and the other six European countries that sent their forces to Greenland.
An hour after Trump dropped his bombshell, none had yet reacted.
Nigel Farage has said he does not agree with Trump’s proposed tariffs and equated the security position of Greenland to the Diego Garcia military base on the Chagos Islands.
The Reform UK leader said: “We don’t always agree with the US government and in this case we certainly don’t. These tariffs will hurt us.”
He added: “If Greenland is vulnerable to malign influences, then have another look at Diego Garcia.”
In May 2025, the British government agreed to give sovereignty over the Chagos Islands to Mauritius and lease back a key military base on the island of Diego Garcia for £101 million a year. The base has long been seen as a deterrent to China’s growing influence in the region.
Trump first floated the notion of tariffs during an event at the White House on Friday. He said: “I may put a tariff on countries if they don’t go along with Greenland, because we need Greenland for national security.”
Tariffs are taxes on imported goods, which are paid to the government by companies bringing in foreign products.
Firms can choose to pass some or all of the extra cost onto their customers, meaning higher prices for ordinary Americans and less incentive to buy goods from Britain.
The US is the UK’s largest trading partner. In 2024 Britain exported almost £60 billion of goods to the US.
The territory’s natural resources and position in the Arctic Circle have put it firmly in the US president’s sights.
Greenland is rich in largely untapped mineral and hydrocarbon resources:
And its position in the Arctic is gaining strategic significance as ice caps melt, potentially opening up new shipping routes.
• Read in full: Why does Trump want Greenland?
Ed Davey said the recent tariff threat meant the government’s policy towards the US “lies in tatters”.
In a post on social media, the Liberal Democrat leader said: “Trump is now punishing the UK and Nato allies just for doing the right thing.
“Time for the PM to stand firm against the bully in the White House, and work with European and Commonwealth allies to make him back down from this reckless plan.”
Demonstrators marched to the US embassy in the Danish capital on Saturday as protesters also gathered in Nuuk, Greenland.
“We are demonstrating against American ambitions to annex Greenland,” said Camilla Siezing, chair of Inuit, the Joint Association of Greenlandic Local Associations in Denmark.
• Read in full: ‘Greenland not for sale’: protests in Denmark against Trump takeover
The fresh threats of tariffs come despite a visit from US members of congress to Denmark yesterday.
The bipartisan group met Mette Frederiksen, the Danish prime minister, and Jens-Frederik Nielsen, the prime minister of Greenland, in an effort to defuse tensions over Greenland.
Chris Coons, a Democratic senator, led the group and pledged to “lower the temperature and have a more constructive dialogue about the best path forward”.
During the visit, Lisa Murkowski, a Republican senator from Alaska, said the “vast majority” of Americans didn’t think that acquiring Greenland was a good idea.
Trump posted a picture of himself on his Truth Social platform last night, titled “The Tariff King”.
Trump has been insisting for months that the US should control Greenland. He said this week that anything less than territory being in US hands would be “unacceptable”.
His demands have been repeatedly rejected by Greenland’s leaders and by Denmark, which is a member of the Nato military alliance.
Greenland’s location between North America and the Arctic makes the island well placed for early warning systems in the event of missile attacks and for monitoring vessels in the region.
The US operates one base in Greenland, the Pituffik Space Base, which it has controlled since World War Two. The base is used for monitoring missiles.
JD Vance visited the Pituffik base in March last year
JIM WATSON/AFP/GETTY IMAGES
Kemi Badenoch has called Trump’s proposed tariffs a “terrible idea”.
In a post on social media, the Conservative Party leader said: “President Trump is completely wrong to announce tariffs on the UK over Greenland. People in both UK and US will face higher costs.”
She said the tariffs will be “yet another” burden for businesses in the UK, adding: “The sovereignty of Greenland should only be decided by the people of Greenland. On this, I agree with Keir Starmer.”
Trump said that tariffs of 10 per cent on all goods sent to the US would begin on February 1, rising to 25 per cent by June 1.
He said: “We have subsidised Denmark and all of the Countries of the European Union, and others, for many years by not charging them Tariffs, or any other forms of remuneration. Now, after Centuries, it is time for Denmark to give back – World Peace is at stake!”
The eight nations Trump has threatened with tariffs include Denmark, Norway, Sweden, France, Germany, the United Kingdom, the Netherlands and Finland.
They have been chosen in retaliation for recent trips to Greenland and for general opposition to his efforts to purchase the island, which is a semi-autonomous territory belonging to Denmark.
This week several of the European nations sent military officials to Greenland as part of a long-planned joint security exercise. The UK sent one military officer at Denmark’s request.
European soldiers attend a briefing during a military exercise in Nuuk, Greenland, this week
DANISH DEFENCE/REUTERS
President Trump has announced that the UK and European countries will face new tariffs on exports unless a deal is agreed for the purchase of Greenland.
In a post on his TruthSocial platform, Trump said that tariffs would start at 10 per cent before increasing to 25 per cent in June.
The US president accused eight European countries, including the UK, Denmark and France, of playing a “dangerous game” by visiting Greenland in recent weeks.