# Greenland Autonomous territory of Denmark and the world's largest island, which became a geopolitical flashpoint when [[Donald Trump]] publicly proposed purchasing it in 2019 — reviving a Cold War–era idea rooted in Greenland's strategic position between North America and Europe. The island hosts Pituffik Space Base (formerly Thule), a critical [[NATO]] early-warning installation, and sits atop significant rare-earth mineral and hydrocarbon reserves. Trump's proposal, initially dismissed as absurd, reflected a real-power logic: as Arctic ice melts, Greenland's shipping routes, minerals, and military geography become increasingly valuable. The episode illustrated the tension between [[Manifest Destiny]]–style expansionism and modern sovereignty norms, and it foreshadowed Trump's second-term rhetoric about acquiring territory. China's mining investments in Greenland add a great-power competition layer that echoes [[Cold War]] and [[Monroe Doctrine]] dynamics. *Stub — expand with: Thule Air Base history, 2025 Trump escalation, Denmark diplomatic fallout, rare-earth geopolitics, Greenlandic independence movement.* ## See also - [[Law of the Sea]] — UNCLOS, exclusive economic zones, and the treaty the U.S. enforces but never ratified - [[Arctic Geopolitics]] — melting ice, the Northern Sea Route, and great-power competition in the Arctic