**Trader consensus at 97% against a U.S. invasion of Greenland in 2026 stems primarily from Denmark’s NATO membership and the alliance’s collective defense commitments, which would make any military action against a treaty ally a direct threat to transatlantic security structures.** Greenland’s status as a self-governing Danish territory with firm rejections of annexation from Copenhagen, Nuuk, and European partners reinforces this barrier, as does the absence of Pentagon planning for such an operation. Recent developments include ongoing trilateral talks since January 2026, NATO-led Arctic exercises such as Operation Arctic Sentry, EU investment pledges, and Danish statements ruling out any transfer while emphasizing security cooperation. Logistical constraints in the Arctic further reduce feasibility. Scenarios that could still shift odds include sudden major escalation with Russia or China prompting policy reversal, or abrupt breakdown in negotiations, though these remain low-probability given sustained diplomatic engagement.