Trump has claimed the U.S. needs the Arctic island for national and international security, suggesting Thursday NATO should get involved in his efforts to acquire Greenland.

President Donald Trump told NATO Secretary-General Mark Rutte on Thursday that US control of Greenland is necessary to enhance international security, escalating his campaign to annex the strategic Arctic island.

US President Donald Trump has expressed confidence that the United States would annex Greenland, emphasizing that North Atlantic Treaty Alliance (NATO) Secretary General Mark Rutte could play a key role in facilitating the acquisition.