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US, Denmark, and Greenland seal Arctic security deal expanding Washington's role on the island

9/19/2026

In focus for readers tracking Arctic developments: the United States, Denmark, and Greenland have reached a security agreement that broadens Washington's presence on the Arctic island, resolving a long-standing diplomatic dispute between the three parties.

Greenland remains outside American sovereignty under the deal's terms. The agreement draws a clear line between expanded American involvement in Greenland's security and any claim to the island itself.

The explicit no-cession clause, named in the deal's framing, reads as the arrangement's load-bearing condition.

What to watch is any follow-on disclosure from Denmark, Greenland, or Washington that details the practical scope of the expanded American role on the island.

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