Donald Trump has refused to rule out using force to annex Greenland - a scenario that would spell the end of Nato, according to Denmark.

Allies including France and Germany are working closely on a plan on how to respond should the United States act on its threat to take over Greenland.

Countries in Europe reportedly are working on a plan if the Trump administration makes a move on acquiring Greenland, which is a a Danish territory.

The EU has discussed what a European response would look like if the U.S. threat on acquiring Greenland, a semi-autonomous Danish territory, is real, European Union foreign policy chief Kaja Kallas said on Thursday.

US Vice President JD Vance has launched a scathing attack on Europe’s handling of “critical” Greenland as its locals reject both Danish and US rule. Vance told Fox News that

U.S. Secretary of State Marco Rubio on Wednesday said that he would meet with Denmark next week, as U.S. President Donald Trump has repeated in recent days that he wants to gain control of Greenland.

President Donald Trump’s renewed interest in the United States acquiring Greenland has stirred new concerns in Europe and NATO.

Amid rhetoric from the Trump administration, some officials, such as Stephen Miller, point to Greenland's colonial past.