European military personnel were due to begin arriving in Greenland on Thursday, shortly after a meeting between American, Danish and Greenlandic officials in Washington failed to resolve "fundamental disagreement" over the mineral-rich, strategic Arctic island.
US President Donald Trump has repeatedly vowed to take control of the autonomous Danish territory, arguing that it is vital for US security, reported AFP.
France, Sweden, Germany and Norway announced Wednesday that they would deploy military personnel as part of a reconnaissance mission to Greenland's capital Nuuk.
"Soldiers of NATO are expected to be more present in Greenland from today and in the coming days. It is expected that there will be more military flights and ships," Greenland's deputy prime minister Mute Egede told a news conference on Wednesday, adding they would be "training".
"The first French military personnel are already on their way. Others will follow," French President Emmanuel Macron said on X.
The deployment of a 13-strong Bundeswehr reconnaissance team to Nuuk from Thursday was at Denmark's invitation, the German defense ministry said, adding it would run from Thursday to Sunday.
The deployment was announced on the same day that the foreign ministers of Denmark and Greenland met with US Vice President JD Vance and Secretary of State Marco Rubio in Washington.
Danish Foreign Minister Lars Lokke Rasmussen, speaking after leaving the White House, said a US takeover of Greenland was "absolutely not necessary."
"We didn't manage to change the American position. It's clear that the president has this wish of conquering over Greenland," Lokke told reporters.
"We therefore still have a fundamental disagreement, but we also agree to disagree."
Trump, speaking after the meeting which he did not attend, for the first time sounded conciliatory on Greenland, acknowledging Denmark's interests even if he again said he was not ruling out any options.
"I have a very good relationship with Denmark, and we'll see how it all works out. I think something will work out," Trump said without explaining further.
He again said Denmark was powerless if Russia or China wanted to occupy Greenland, but added: "There's everything we can do."
Trump has appeared emboldened on Greenland after ordering a deadly January 3 attack in Venezuela that removed President Nicolas Maduro.
On the streets of Nuuk, red and white Greenlandic flags flew in shop windows, on apartment balconies, and on cars and buses, in a show of national unity this week.
Some residents described anxiety from finding themselves at the center of the geopolitical spotlight.
"It's very frightening because it's such a big thing," said Vera Stidsen, 51, a teacher in Nuuk.
"I hope that in the future we can continue to live as we have until now: in peace and without being disturbed," Stidsen told AFP.
