WASHINGTON (AP) — Officials from Greenland and Denmark met in Washington on Wednesday with top White House officials as President Donald Trump moved to ratchet up the pressure by suggesting that NATO should help the United States acquire the world's largest island and saying anything less than it being under American control is unacceptable.

Vice President JD Vance and Secretary of State Marco Rubio participated in the hourlong talks with Danish Foreign Minister Lars Løkke Rasmussen and Greenlandic Foreign Minister Vivian Motzfeldt to discuss Greenland, a semiautonomous territory of NATO ally Denmark.

But a few hours before the officials sat down, Trump reiterated on his social media site that the U.S. "needs Greenland for the purpose of National Security." He added that "NATO should be leading the way for us to get it" and that otherwise Russia or China would — "AND THAT IS NOT GOING TO HAPPEN!"

"NATO becomes far more formidable and effective with Greenland in the hands of the UNITED STATES," Trump wrote. "Anything less than that is unacceptable."

In response, Greenland's representatives to the U.S. and Canada posted on social media, "Why don't you ask us?" and noted the low percentage of island residents who favor becoming part of the U.S.

Greenland residents want the US to back off

Along the narrow, snow-covered main street in Nuuk, international journalists and camera crews have been stopping passersby every few meters (feet) asking them for their thoughts on a crisis which Denmark's prime minister has warned could potentially trigger the end of NATO.

Tuuta Mikaelsen, a 22-year-old student, told The Associated Press in Nuuk that she hoped American officials would get the message to "back off."

Greenland's Prime Minister Jens-Frederik Nielsen told a news conference in Copenhagen on Tuesday that "if we have to choose between the United States and Denmark here and now, we choose Denmark. We choose NATO. We choose the Kingdom of Denmark. We choose the EU."

Asked later Tuesday about Nielsen's comments, Trump replied: "I disagree with him. I don't know who he is. I don't know anything about him. But, that's going to be a big problem for him."

Greenland is strategically important because, as climate change causes the ice to melt, it opens up the possibility of shorter trade routes to Asia. That also could make it easier to extract and transport untapped deposits of critical minerals which are needed for computers and phones.

Denmark has vowed for months to strengthen its military presence there. The Defense Ministry said that, starting Wednesday, the military is deploying "capabilities and units" related to exercises. "In the period ahead, this will result in an increased military presence in and around Greenland, comprising aircraft, vessels and soldiers, including from NATO allies," it said in a statement.

Defense Minister Troels Lund Poulsen said that the Danish military, "together with a number of Arctic and European allies, will explore in the coming weeks how an increased presence and exercise activity in the Arctic can be implemented in practice."

Trump said in Wednesday's post that Greenland is "vital" to the United States' Golden Dome missile defense program. He also has said he wants the island to expand America's security and has cited what he says is the threat from Russian and Chinese ships as a reason to control it.

But both experts and Greenlanders question that claim.

"The only Chinese I see is when I go to the fast food market," heating engineer Lars Vintner said. He said he frequently goes sailing and hunting and has never seen Russian or Chinese ships.

His friend, Hans Nørgaard, agreed, adding "what has come out of the mouth of Donald Trump about all these ships is just fantasy."

Denmark has said the U.S, which already has a military presence, can boost its bases on Greenland. For that reason, "security is just a cover," Vintner said, suggesting Trump actually wants to own the island to make money from its untapped natural resources.

Mikaelsen, the student, said Greenlanders benefit from being part of Denmark, which provides free health care, education and payments during study, and "I don't want the U.S. to take that away from us."

More diplomatic efforts

Later Wednesday, Løkke Rasmussen and Motzfeldt, along with Denmark's ambassador to the U.S., are due to meet with senators from the Arctic Caucus in Congress.

A bipartisan delegation of U.S. lawmakers is also heading to Copenhagen later this week to meet Danish and Greenlandic officials.

Last week, Denmark's major European allies joined Danish Prime Minister Mette Frederiksen in issuing a statement declaring that Greenland belongs to its people and that "it is for Denmark and Greenland, and them only, to decide on matters concerning Denmark and Greenland."

French Foreign Minister Jean-Noël Barrot told RTL radio Wednesday that his country plans to open a consulate in Greenland Feb. 6, following a decision last summer to open the diplomatic outpost.

"Attacking another NATO member would make no sense; it would even be contrary to the interests of the United States. And I'm hearing more and more voices in the United States saying this," Barrot said. "So this blackmail must obviously stop."

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Burrows reported from Nuuk, Greenland. Associated Press writers Geir Moulson in Berlin, Lisa Mascaro in Washington and Catherine Gaschka in Paris contributed to this report.