Done right, a big, new deal among Denmark, Greenland, and the United States could reap all three enormous benefits. TREASURE ISLANDGreenland is central to U.S. national security in the Arctic, and the United States needs resources and trade from the island. Denmark, Greenland, and the United States also worked to expand the island’s dual-use infrastructure, such as ports and airports. Simultaneously, the United States pursued a rigorous effort to map Greenland’s minerals. To deliver on these initiatives, the United States needs to rapidly increase its investments into Arctic security.