The EU and Nato have taken a vow of silence over Greenland after Denmark requested its key allies refrain from reacting to Donald Trump’s threats to seize the Arctic island.

The European Union is "not negotiating" on Greenland, EU's foreign policy chief Kaja Kallas said on Monday, amid claims by U.S. President Donald Trump that the United States needs to control Greenland for security purposes.

European Union foreign policy chief Kaja Kallas said Monday that Europe is “not negotiating” with the United States over control of Greenland, as President Trump continues to insist that acquiring the self-governing territory of Denmark is necessary for American national security.

The Defense Ministry in Copenhagen said those will include three new Arctic naval vessels, two additional long-range surveillance drones and satellite capacity.

Trump has steered clear with his intentions that the United States will gain control of Greenland, despite Denmark PM Fredericksen reiterating that the island was not for sale.

Denmark is doing everything possible to dissuade Trump from wanting to take control of Greenland. The country's Prime Minister, Mette Frederiksen, announced that she has received support from "European leaders.