President Donald Trump has criticised the NATO alliance on social media, accusing members of leaving the United States in the lurch and focusing on Greenland. The comments were made during a post on his Truth Social platform, where he expressed frustration with the transatlantic alliance and renewed interest in the Arctic territory. The timing of the post indicates a renewed tension between the president and European allies who have declined to join the U.S.-Israeli war on Iran. The president's criticism comes after a two-hour Oval Office sit-down with NATO Secretary-General Mark Rutte. Despite this, Congressional approval is required for a full withdrawal from NATO, and European officials have stated that threats alone have weakened the alliance's stability.