外媒：丹麦首相警告称，美国若吞并格陵兰岛将意味着北约终结

Group 1 - The core viewpoint of the article highlights the escalating tensions between the United States and Denmark regarding the potential U.S. acquisition of Greenland, with Danish Prime Minister Frederiksen warning that such an action would end NATO as a military alliance [1][3] - Frederiksen's comments indicate a shift from outright rejection of the idea of U.S. annexation of Greenland to acknowledging the possibility, reflecting a heightened concern over U.S. intentions [3] - Greenland, the world's largest island, is a self-governing territory of Denmark, with defense and foreign affairs managed by the Danish government, and the U.S. currently operates a military base there [3] Group 2 - President Trump has repeatedly expressed the need for Greenland, suggesting that military force could be considered, which has drawn criticism from Denmark and Greenland [3] - Following Trump's remarks on January 4, he indicated that Venezuela might not be the last country the U.S. intervenes in, reinforcing the importance he places on Greenland for U.S. national security [3] - The European Union, along with the UK, Germany, and France, has expressed support for Denmark and Greenland, asserting that the future of Greenland should be determined by Denmark and its people [3]