The United States, Greenland, and Denmark have signed a 10-page security agreement that includes plans to build two new U.S. military bases in Greenland. The deal, announced by U.S. President Donald Trump on Oct. 14 via Truth Social, also reaffirms the sovereignty of the Kingdom of Denmark while recognizing Greenland’s right to self-determination.
Key developments:
- The agreement authorizes the construction of bases in Narsarsuaq (southern Greenland) and Mestersvig (eastern Greenland), in addition to the existing Pituffik Space Base in the north.
- The U.S. will gain permanent control over security in Greenland under the updated 1951 U.S.–Denmark defense pact, though Denmark retains sovereignty over the territory.
The deal includes provisions restricting non-NATO and non-EU states from exerting significant influence or accessing sensitive information in Greenland, citing national security concerns. It also formalizes U.S. cooperation with Greenland in science, education, minerals, economic development, and cultural partnerships.
Exploration for energy and minerals
Separately, U.S.-based Critical Metals Corp announced on Oct. 5 that Greenland’s government had approved its Tanbreez mining project through 2050. The project targets rare earth minerals, though the agreement does not specify oil or gas exploration timelines. Trump’s Truth Social post on Oct. 14 claimed experts had indicated Greenland holds “far greater” oil reserves than nearly anywhere else in the world, though no details were provided.
Strategic significance
The agreement highlights Greenland’s military and economic importance, particularly as melting Arctic ice opens new shipping routes and exposes untapped resources. Trump emphasized Greenland’s role in U.S. defense, stating that any attack on the U.S. would have to pass through the island, where American forces could intercept threats.
Background and reactions
Reports in August noted U.S. oil companies conducting preparatory operations in eastern Greenland, raising concerns among local authorities. The new defense deal follows Trump’s previous threats to acquire Greenland by force, which drew criticism from Danish officials. The updated pact does not alter Denmark’s sovereignty but grants the U.S. expanded security responsibilities in the region.
The agreement also aligns with broader U.S. Arctic strategy, including the proposed “Golden Dome” defense shield, aimed at countering missile threats from Russia and other actors.