Denmark and Greenland said on Saturday (September 19, 2026) that any agreement with the United States would not compromise Greenland's sovereignty. The statement followed President Donald Trump's remark that the deal would give Washington “permanent control” over the Arctic island's security, leaving the precise scope unclear.

The United States, Denmark and Greenland said late on Friday (September 18, 2026) that they had reached an agreement for the US to develop a significant military presence on Greenland, while prohibiting US adversaries from building their own bases on the island.

Key details have not been made public, including the scale of the US military presence in the self-governing Danish territory and whether any formal power over foreign policy and resources would be ceded to Washington.