Donald Trump has intensified his demands for the United States to acquire Greenland, threatening the United Kingdom and other European allies with new tariffs unless they agree to the purchase. The United States president has shared provocative images online, including doctored photos depicting Greenland as United States territory, and has not ruled out the use of military force to seize the island. These moves have rattled financial markets, with major European indices and the FTSE 100 falling sharply in early trading. International leaders, including France's Emmanuel Macron, have attempted to engage Trump in diplomatic discussions, offering to host a summit to address the escalating tensions. Meanwhile, Trump has criticized the United Kingdom's decision to transfer the British Indian Ocean Territory to Mauritius, calling it a sign of weakness and using it to justify his stance on Greenland.