Denmark and Greenland are seeking a meeting with U.S. Secretary of State Marco Rubio after the Trump administration doubled down on its intention to take over the strategic Arctic island, a self-governing Danish territory.Tensions escalated after the White House said Tuesday that the “U.S. military is always an option,” even as a series of European leaders rejected President Donald Trump’s renewed demands and Danish Prime Minister Mette Frederiksen warned that a U.S. takeover would amount to the end of the NATO military alliance. Trump has floated since his first term the idea of acquiring the world’s largest island to ensure U.S. security in the Arctic.