Spanish airline Iberia will suspend its Madrid–Havana route from June through approximately November, citing critical aviation fuel shortages across Cuba and a sharp drop in passenger demand. The crisis stems largely from a US intervention against Venezuelan oil supplies in January, which cut off Cuba's primary source of petroleum; since February, Iberia has been forced to make a technical refuelling stop in Santo Domingo on return flights to Spain. The airline plans to resume the route by year's end if conditions improve, and is offering affected passengers a rerouting via Panama in partnership with Copa Airlines.