Syrian businessmen and trade officials say they are worried the economic lifeline provided by Iran is under strain from plunging oil prices, despite public messages of support from Syria’s strongest regional ally. Syrian President Bashar al-Assad has relied on oil-producing Iran to help him fight a nearly four-year-old civil war and also prop under a currency under pressure. “If it had not been for Iranian support we could not have survived the crisis,” a senior Syrian trade official said from Damascus, requesting anonymity. “It was Iranian support that has been the most important. In return, we are promising them more and more, and opening more and more doors for them to invest in Syria,” he said. Oil production in Syria, which is under U.S. and European sanctions, has dropped sharply since the start of the conflict and as insurgents have taken over energy installations. In July […]