The U.S. military maintains a permanent presence at Pituffik air base in northwest Greenland under a 1951 agreement granting freedom to build bases with Danish and Greenlandic notification. Denmark has historically accommodated the U.S. presence because Copenhagen does not have the capability to defend Greenland and benefits from U.S. security guarantees through NATO. PICTURED: A view shows the #US military's Pituffik Space Base in #Greenland on March 28, 2025. Jim Watson
