A group of bipartisan lawmakers introduced legislation to block President Donald Trump from invading a NATO country or territory, including Greenland.

The European Union can help provide security for Greenland, should Denmark request it, the European Commissioner for Defence and Space said, warning that a U.S. military takeover of the island would be the end of NATO.

The Trump administration has repeatedly said the U.S. should be in control of Greenland, which is part of Denmark and NATO.

Britain is discussing with NATO allies how to enhance Arctic security against Russia and China. Transport Secretary Heidi Alexander said Sunday that these talks are routine and not a response to U.S.

Speaking during a traditional New Year press conference, Meloni said the use of military action in Greenland would not be in anyone's interest and would have serious consequences for NATO.

Trump’s threat to annex an autonomous part of Denmark has plunged NATO into an unprecedented situation: An alliance based on collective defense now faces the prospect that one member might attack another.

The response comes amid concerns over Russia's continued military build-up in the region and its close ties to China.

NATO officials are reportedly monitoring at least three more suspected Russian oil tankers in the Atlantic – fuelling speculation Washington is gearing up for another daring raid. It comes