Canadian airlines have suspended flights to Cuba as the island nation faces depletion in jet fuel stocks amid a U.S. energy squeeze aimed at prompting regime change. The latest step-up of the pressure was a threat from President Trump to impose tariffs on any nation that sends oil to Cuba. According to a Reuters report, Air Canada had warned about lack of jet fuel supplies at Cuban airports as soon as today, with two other Canadian carriers cancelling flights as well. Per the report, the shortage of jet fuel is expected to last for a month. Air…