US Vice President JD Vance has urged European leaders to take President Donald Trump's renewed interest in acquiring Greenland seriously, warning that the United States may act if Europe does not address security concerns over the island. Vance criticized Denmark and other European nations for not doing enough to protect Greenland from the ambitions of Russia and China, and emphasized the strategic importance of the island for US missile defense. President Trump has stated that he prefers US ownership of Greenland over the current treaty arrangement, suggesting that ownership offers advantages beyond what treaties provide. European leaders, including Denmark's defense minister, have called for dialogue, while the United Kingdom and other allies have reaffirmed their commitment to Greenland's territorial integrity.