Donald Trump at the White House on Tuesday © Aaron Schwartz/CNP/Bloomberg

US stocks and the dollar dropped after Donald Trump said there was “no going back” on the campaign to take control of Greenland even as he offered talks over an issue that has put Washington and its European allies at loggerheads.

Wall Street’s S&P 500 share index slid 2.1 per cent on Tuesday, its worst day since October, as escalating transatlantic tensions and threats of a trade war unnerved investors. The dollar also dropped 0.9 per cent against a basket of six peers, while US government debt fell sharply.

The US president and European leaders traded criticism over his grab for the Arctic island, with France’s President Emmanuel Macron taking aim at Trump’s “useless aggressivity” and Belgian premier Bart De Wever urging Europeans to “call his bluff now”.

Denmark’s Prime Minister Mette Frederiksen said her country needed “to stand firm and show what we are made of” even as it was “threatened by our closest ally”.

Trump’s threat to impose extra tariffs next month on eight European states that recently sent military personnel to Greenland has undermined trust between Washington and European capitals and is dominating the World Economic Forum in Davos, where he is due to arrive on Wednesday.

The main parties in the European parliament agreed on Tuesday to suspend ratification of last year’s EU-US trade deal and Brussels is likely to impose tit-for-tat tariffs if Trump follows through on his threats.

Trump said on Tuesday he had “agreed to a meeting of the various parties” in Davos over the Greenland stand-off.

Despite what he characterised as a “very good” call with Nato secretary-general Mark Rutte, the US president said “there can be no going back” on his plan to seize the territory.

Trump posted what appeared to be an AI-generated image of himself, vice-president JD Vance and secretary of state Marco Rubio in the vast Arctic island with an American flag and a sign reading: “US territory EST 2026.”

Asked at a press conference later on Tuesday how far he would be willing to go to acquire Greenland, Trump said “you’ll find out”.

US President Donald Trump: 'I think that we will work something out where Nato is going to be very happy, and where we’re going to be very happy'

How far are you willing to go to acquire Greenland? You'll find out. If a consequence of your determination to take control of Greenland is the ultimate breakup of the Nato alliance, is that a price you're willing to pay? You mean the breakup of, of it's very interesting. So I think something's going to happen that's going to be very good for everybody. I think that we will work something out where Nato is going to be very happy and where we're going to be very happy.
US President Donald Trump: 'I think that we will work something out where Nato is going to be very happy, and where we’re going to be very happy' © The White House

European Commission president Ursula von der Leyen had earlier warned of a “dangerous downward spiral” if the president pressed ahead with his push to make Denmark cede Greenland, vowing an “unflinching, united and proportional” response.

Trump hit back at criticism that he risks blowing up the transatlantic alliance, saying on his Truth Social platform that, without him, “there would be no NATO right now” and that the military pact “would have been in the ash heap of History”.

In Davos, US Treasury secretary Scott Bessent urged America’s trading partners to “take a deep breath and let things play out”, adding that “the worst thing countries can do is escalate against the US”.

Bessent stressed America’s commitment to Nato, saying “of course Europe is an ally”.

The Treasury secretary’s comments came as prices for long-term US government debt dropped, reflecting jitters over Trump’s Greenland threats and an earlier sell-off in Japanese bonds. The 30-year Treasury yield was up 0.08 points to 4.92 per cent.

Tuesday’s fall in US stocks was also broad, with most sectors falling. Tech stocks led the declines, pushing the Nasdaq Composite down by 2.4 per cent. Consumer discretionary, financial and industrial stocks also sustained significant selling pressure.

In a barrage of early morning posts on Truth Social, Trump took aim at European leaders. He accused the UK of “great stupidity” over its plan to transfer ownership of the Chagos Islands, including the US air base of Diego Garcia, to Mauritius. He cited the move as “another in a very long line of National Security reasons why Greenland has to be acquired”.

He also posted messages from Macron, in which the French president said: “I do not understand what you are doing on Greenland.”

On Monday night Trump threatened to put 200 per cent tariffs on French wine and champagne over Macron’s reported reluctance to join a US-led Board of Peace for Gaza and potentially other global hotspots.

Additional reporting by Steff Chávez in Washington

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