More than half a dozen European countries warned in a joint statement on Sunday that tariff threats over Greenland undermine transatlantic relations as the White House seeks to pressure allies into a deal to acquire the Arctic island.

The statement, issued by Denmark, Finland, France, Germany, the Netherlands, Norway, Sweden and the United Kingdom, said the countries remain committed to strengthening Arctic security and are prepared to engage in dialogue grounded in respect for sovereignty and territorial integrity.

"Tariff threats undermine transatlantic relations and risk a dangerous downward spiral. We will continue to stand united and coordinated in our response," the statement said in part. "We are committed to upholding our sovereignty."

The North Atlantic Treaty Organization (NATO) members said they also stand in "full solidarity with the Kingdom of Denmark and the people of Greenland."

JOHNSON: 'NO BOOTS ON THE GROUND' FOR TRUMP'S GREENLAND ACQUISITION PLANS AMID MILITARY SPECULATION

The statement comes after President Donald Trump threatened on his Truth Social platform to impose a 10% tariff on the eight countries unless a deal is reached for what he called the "complete and total purchase of Greenland."

Trump said the 10% tariff would go into effect on Feb. 2 and could rise to 25% on June 1. 

European Commission President Ursula von der Leyen, French President Emmanuel Macron, Swedish Prime Minister Ulf Kristersson, Finnish President Alexander Stubb, Norwegian Prime Minister Jonas Gahr Støre and U.K. Prime Minister Keir Starmer condemned Trump’s post Saturday on social media.

Kristersson wrote on X that allies would not be "blackmailed."

"Only Denmark and Greenland decide on issues concerning Denmark and Greenland," he said, adding that other European Union (EU) countries were discussing a coordinated response.

Kaja Kallas, the EU’s top diplomat, also voiced concern over Trump’s remarks, warning that Russia and China were "having a field day" and stood to benefit from divisions within NATO.

"If Greenland’s security is at risk, we can address this inside NATO. Tariffs risk making Europe and the United States poorer and undermine our shared prosperity," she said. "We also cannot let our dispute distract us from our core task of helping to end Russia’s war against Ukraine."

Trump has repeatedly said the United States needs Greenland, a semiautonomous Danish territory, for "national security" purposes.

Greenland’s natural resource wealth has also long-drawn strategic interest, the Center for Strategic and International Studies said in a January report, noting the territory is rich in iron ore, graphite, tungsten, palladium, vanadium, zinc, gold, uranium, copper and oil.

TRUMP KNOWS GOOD REAL ESTATE — AND HE KNOWS GREENLAND'S VALUE TO NATIONAL SECURITY

Greenland’s leaders, however, have firmly rejected any suggestion the territory’s future or sovereignty is open to negotiation.

Greenland's Prime Minister Jens-Frederik Nielsen said on Facebook Thursday that the territory is "not for sale" and will not be owned or governed by the U.S.

DENMARK'S FOREIGN MINISTER SAYS TRUMP HAS A POINT ON CHINA, RUSSIA THREAT TO GREENLAND

"Greenland does not want to be a part of the United States," Nielsen argued.

Sen. Thom Tillis, R-N.C., said the Trump administration’s efforts to "seize" the territory of an ally were "beyond stupid."

"It hurts the legacy of President Trump and undercuts all the work he has done to strengthen the NATO alliance over the years," Tillis explained.

President Donald Trump's administration is preparing 1,500 troops for potential deployment to Minnesota, The Washington Post reported Sunday citing unnamed defense officials.

Neither the White House nor the Pentagon have directly confirmed the deployment plans, but the White House told the Post in a statement that the Department of War should be "prepared for any decision the President may or may not make."

The Pentagon did not immediately respond to a request for comment from Fox News Digital.

The report comes just days after Trump threatened to invoke the Insurrection Act to deploy U.S. military forces to Minnesota if state officials do not start cracking down on anti-ICE agitators.

MIKE DAVIS: WHAT IS HAPPENING IN MINNESOTA IS WHY WE HAVE THE INSURRECTION ACT

"If the corrupt politicians of Minnesota don’t obey the law and stop the professional agitators and insurrectionists from attacking the Patriots of I.C.E., who are only trying to do their job, I will institute the INSURRECTION ACT," Trump posted on his Truth Social platform.

Minneapolis and St. Paul are already hosting some 3,000 federal agents deployed there after a massive fraud scandal rocked the state late last year.

Protesters across the Twin Cities have followed and harassed federal agents as they carry out operations, leading to confrontations and the killing of activist Renee Nicole Good by federal agents in the opening days of January.

MINNESOTA DEPT OF CORRECTIONS DISMISSES DHS NARRATIVE ABOUT THEM NOT COMPLYING WITH ICE

Trump toned down the pressure in a statement on Friday, saying he did not see at that point a reason to invoke the Insurrection Act.

"I believe it was Bush, the elder Bush, he used it, I think 28 times," Trump told reporters while departing the White House. "It's been used a lot. And if I needed it, I'd use it. I don't think there's any reason right now to use it, but if I needed it, I'd use it. It's very powerful."

The law reportedly has not been invoked since the 1992 Los Angeles riots, which began after four police officers were acquitted in the beating of Rodney King.

Despite Trump's threat, some Republicans are resistant to the idea of using the centuries-old law. 

Senate Majority Leader John Thune, R-S.D., seemed to downplay Trump's threat, placing his hope in local law enforcement's ability to "settle things down."

"Hopefully the local officials working with not only the federal law enforcement, ICE and other agencies, but also the local law enforcement officials will be able to settle things down," Thune told reporters.

Fox News' Louis Casiano contributed to this report.