Recent US military planning for potential action against Cuba centers on a September 25 internal Army Reserve message requesting feedback on deploying support units—including medical brigades, military police, engineers, and logistics commands—to US Southern Command, possibly within 90-120 days. Officials confirm this continues contingency preparations amid nearly nine months of sanctions, fuel restrictions, and a naval blockade aimed at forcing political reforms in Havana. President Trump has described Cuba as a failing state open to a deal, while Secretary Rubio emphasized readiness to assist a transition without confirming military necessity. Earlier 2026 briefings examined options such as air assaults, though resources remain stretched by other priorities and no deployment orders exist. These steps shape trader views on escalation risks through late 2026.