Iran has opened a direct line of communication with rebels in Syria’s new leadership since its ally Bashar al-Assad was ousted, a senior Iranian official told Reuters on Monday, in an attempt to “prevent a hostile trajectory” between the countries. The lightning advance of a militia alliance spearheaded by Hayat Tahrir al-Sham, a former al-Qaeda affiliate, marked one of the biggest turning points for the Middle East in generations. Assad’s fall as president removed a bastion from which Iran and Russia exercised influence across the Arab world.