Prime Minister Mette Frederiksen speaks during a joint doorstep with Prime Minister of Greenland Jens-Frederik Nielsen at Marienborg, April, 27, 2025. Kristian Tuxen Ladegaard Berg/SOPA Images/LightRocket via Getty Images

Denmark Prime Minister Mette Frederiksen told The Associated Press "you cannot spy against an ally" after reports that the United States has stepped up intelligence gathering on Greenland, a semi-autonomous Danish territory coveted by U.S. President Donald Trump.

Frederiksen's comments Friday are the latest in the spat between Denmark, Greenland and the United States because Mr. Trump seeks to annex the strategic Arctic island. Denmark and Greenland insist that the mineral-rich island is not for sale, while Mr. Trump has not ruled out taking it by military force even though Denmark is a NATO ally.

Greenland is located to the northeast of Canada. It is a semi-autonomous territory of the Kingdom of Denmark and has its own elected government. Its location between the U.S., Russia and Europe makes it strategic for both economic and defense purposes, especially as melting sea ice has opened up new shipping routes through the Arctic. It is also the location of the northernmost U.S. military base.

Mr. Trump has repeatedly claimed the U.S. needs Greenland for national security purposes.

"I'm talking about protecting the free world," he said in early January. "You look at — you don't even need binoculars — you look outside. You have China ships all over the place. You have Russian ships all over the place. We're not letting that happen. We're not letting it happen."

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The Danish prime minister spoke to the AP the day after Denmark summoned the top American diplomat in the country for an explanation following a Wall Street Journal report which said several high-ranking officials under the U.S. director of national intelligence, Tulsi Gabbard, had directed intelligence agency heads to learn more about Greenland's independence movement and sentiment about U.S. resource extraction there.

Jennifer Hall Godfrey, acting head of the U.S. Embassy in Copenhagen, met with high-ranking Danish diplomat Jeppe Tranholm-Mikkelsen at the Danish Foreign Ministry, the ministry said in an email. It provided no further details. The embassy declined to comment.

Frederiksen said Friday the report was "rumors" in an international newspaper. The Journal cited two people familiar with the U.S. effort which it did not identify.

"Cooperation about defense and deterrence and security in the northern part of Europe is getting more and more important," Frederiksen said. "Of course, you cannot spy against an ally."

Greenlandic Prime Minister Jens-Frederik Nielsen, in comments to Greenland newspaper Sermitsiaq, said the reports of espionage are unacceptable and disrespectful.

Finnish President Alexander Stubb said Friday there is "no question" that the pressure Denmark and Greenland are under "doesn't feel right." He spoke after a security meeting in Norway where the issue of Greenland was discussed between Nordic and Baltic leaders and the U.K., with representatives from Greenland and the Faroe Islands dialling in via video link.

In response to questions about the Journal's report, Gabbard's office released a statement noting that she had made three "criminal" referrals to the Justice Department over intelligence community leaks.

"The Wall Street Journal should be ashamed of aiding deep state actors who seek to undermine the President by politicizing and leaking classified information," Gabbard wrote. "They are breaking the law and undermining our nation's security and democracy. Those who leak classified information will be found and held accountable to the fullest extent of the law."

Greenland's prime minister said last month that U.S. statements about the island have been disrespectful and it "will never, ever be a piece of property that can be bought by just anyone."

Norwegian Prime Minister Jonas Gahr Støre on Friday said those who believe there is "another kind of legal regime in the Arctic" should be told that "this is not the case."

Speaking ahead of the Joint Expeditionary Force leaders' meeting in Oslo, Gahr Støre said there seemed to be suggestions that "in the Arctic, there is some kind of terra nullius, law doesn't apply."

"It applies, sovereignty applies. And Greenland is a part of the Kingdom of Denmark," he said ahead of the meeting with the leaders of the U.K., Nordic and Baltic nations.

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