Veteran diplomat tells CBS News Denmark "ready to cooperate" on Greenland, and he expects U.S. to abandon "anachronistic approach of colonialism" post-Trump.

US President Donald Trump is considering making an offer to buy Greenland, the White House said Wednesday, despite the island's people and controlling power Denmark making clear the territory is not for sale.

President Donald Trump is persisting in his efforts to acquire Greenland, citing its strategic importance to U.S. national security and its valuable resources.

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.

Greenland will not accept a US takeover under “any circumstance” and demanded NATO insure its defense Monday amid President Trump’s desire to acquire the autonomous territory of

The senator's comments come after President Donald Trump said the U.S. would "do something on Greenland, whether they like it or not."

Trump told reporters that Greenland's only defense is 'two dog sleds,' as the Arctic island government warns it 'cannot accept' a US takeover.

Former European Commission Margrethe Vestager cautioned "even for President Trump, for one NATO country to attack another NATO country to acquire territory is really far reaching" in an interview with Euronews as the White House piles on pressure on Denmark to cede the semi-autonomous territory of Greenland "one way or another.