WASHINGTON (AP) – Denmark provided U.S. forces in the east Atlantic with support last week as they intercepted an oil tanker for violations of U.S. sanctions, a Danish government official confirmed on Tuesday, despite tensions between the allies over the Trump administration´s desire for control of Greenland.

The official, who was not authorized to comment publicly on the sensitive matter and spoke on the condition of anonymity, declined to provide details about what the support entailed.

But acknowledgement of Danish support for the U.S. operation comes after tensions spiraled between the NATO allies as President Donald Trump renewed calls for the U.S. to take over Greenland. The vast Arctic island is a semiautonomous territory of Denmark.

The U.S. interception in the Atlantic capped a weekslong pursuit of the tanker that began in the Caribbean Sea as the U.S. imposed a blockade in the waters of Venezuela aimed at capturing sanctioned vessels coming in and out of the South American country.

The White House and Pentagon did not immediately respond to requests for comment. Danish support for the U.S. operation was first reported by Newsmax.

Vice President JD Vance and Secretary of State Marco Rubio will meet with the foreign ministers of Denmark and Greenland on Wednesday at the White House to discuss Trump´s interest in acquiring Greenland, according to a U.S. official who spoke on condition of anonymity because the meeting has not yet been formally announced.

Denmark´s foreign minister, Lars Løkke Rasmussen, said earlier Tuesday that Vance would host a meeting with him and his Greenlandic counterpart, Vivian Motzfeldt, in Washington this week.

Løkke Rasmussen told reporters after a meeting of the Danish parliament´s foreign policy committee that Vance had expressed a wish to take part and that he will host the meeting at the White House, with Rubio in attendance. Neither the White House nor Vance´s office responded immediately to emails and text messages seeking comment.

Løkke Rasmussen, a former Danish prime minister, has been foreign minister since 2022 in the government of Prime Minister Mette Frederiksen.

At a joint news conference with Frederiksen in Copenhagen on Tuesday, Greenlandic Prime Minister Jens-Frederik Nielsen reiterated that Greenland isn´t for sale, Danish media reported. He said that the island is part of the kingdom of Denmark, and Greenland doesn´t want to be owned or ruled by the U.S.

Frederiksen also said Greenland isn´t for sale and underlined Denmark´s willingness to invest in Arctic security. She said it hasn´t been easy to stand up to unacceptable pressure from a close ally and there are many indications that the most difficult part lies ahead.

Tensions have grown this month as Trump and his administration push the issue and the White House considers a range of options, including military force, to acquire Greenland. Trump reiterated his argument that the U.S. needs to “take Greenland,” otherwise Russia or China would, in comments aboard Air Force One on Sunday.

He said he´d rather “make a deal” for the territory, “but one way or the other, we´re going to have Greenland.”

A bipartisan U.S. congressional delegation is headed to Copenhagen for meetings on Friday and Saturday in an attempt to show unity between the United States and Denmark.