Airlines are scaling back flights to Cuba after Cuban authorities warned they cannot guarantee jet fuel supplies, a shortage linked to U.S. sanctions and measures introduced under former President Donald Trump. A Canadian carrier has suspended service as international airlines review routes, refueling options and safety requirements. The disruptions affect Canadian tourists, Cuban tourism revenue and aviation operations across the island. Officials in Cuba are seeking alternative fuel sources, while travel agencies and airlines adjust schedules and passenger plans amid ongoing uncertainty over the country’s aviation fuel availability.