Should China acquire sway in Greenland, former U.S. President Donald Trump has cautioned Denmark of possible military action. Rich resources and position make Greenland, an autonomous province under Danish control strategic and economically important. China has expressed interest in buying the island, which worries Americans about national security. Trump’s threat emphasizes the rising geopolitical conflicts in the Arctic where Russia, China, and the United States are vying for dominance. Trump’s warning emphasizes the continuous struggle for dominance in the area, which may have far-reaching political and financial consequences even if military action seems improbable.