**Trader consensus on the Polymarket market for the number of countries facing US military action in 2026 centers on eight or nine, reflecting documented operations across multiple theaters through late September.** Primary drivers include sustained airstrikes and naval actions against Iran under Operation Epic Fury, which began in February and featured renewed IRGC-targeted strikes in southern Iran in September amid shipping and force-protection concerns in the Strait of Hormuz. Parallel counternarcotics efforts under Operation Southern Spear have involved vessel and limited land strikes in Venezuela—following the January capture of Nicolás Maduro—and Ecuador. Ongoing AFRICOM strikes against al-Shabaab in Somalia, plus earlier 2026 actions against ISIS targets in Syria and Iran-linked groups in Iraq, round out the core count. With roughly three months remaining, additional escalations in existing theaters or new limited operations could shift the total toward nine, while de-escalation or narrow definitions of “military action” support the eight-country outcome favored by current pricing.