The United States, Denmark, and Greenland have finalized a permanent agreement securing perpetual American military access to Greenland’s territory for the expansion of the “Golden Dome” missile defense shield. Prime Minister Mette Frederiksen expressed significant relief following the agreement, which resolves a prolonged diplomatic standoff over the Arctic territory.
The deal was signed on Tuesday evening at United Nations headquarters by U.S. President Donald Trump, Danish Prime Minister Mette Frederiksen, and Greenlandic Prime Minister Jens-Frederik Nielsen. Danish officials welcomed the accord for respecting the Kingdom of Denmark’s borders and the right of Greenlanders to self-determination, replacing earlier threats of territorial acquisition with formal diplomatic consensus.
Military Access and Strategic Importance for Golden Dome
The signed text confirms a shared interest in granting the U.S. military access to Greenlandic territory as necessary for establishing the Golden Dome defense system. Janne Haaland Matlary, a professor of political science at the University of Oslo, notes that the agreement grants the United States wide-ranging military freedom of action on the island. Greenland serves as a critical asset for American missile defense, while Denmark gains enhanced control and defense capabilities in the region, according to Matlary.
President Trump first introduced the Golden Dome initiative from the Oval Office in May 2025, describing a comprehensive shield designed to intercept ballistic and hypersonic missiles launched from remote locations or space. While Trump estimated the initial implementation cost at 17,5 milliarder dollar, the Congressional Budget Office projected a total cost of 1200 milliarder dollar over 10 år.
Geographic Advantage in the Arctic
Geographical proximity dictates Greenland’s central role in the defense architecture. Knut Ola Naastad Strøm, an associate professor in history and air power studies at Forsvarets høgskole, explains that intercepting incoming missiles in space requires a vast network of sensors and weapons with early-warning capabilities situated along the shortest trajectory toward the U.S. East Coast from Russian Northern Fleet bases on the Kola Peninsula or from China.
Bertelsen states that the primary driver is the strategic importance of the Arctic in undercutting adversary strategic deterrence rather than local defense.
Shifting Security Priorities
Anders Romarheim, a U.S. expert and researcher at Institutt for forsvarsstudier, suggests that missile defense projects like Golden Dome outweighed concerns regarding Chinese and Russian presence on the island. Romarheim notes that because conventional military threats from nearby nations remain contained, infrastructure projects for missile defense form the core of heightened U.S. engagement in Greenland.
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