Lebanon’s parliament failed on Monday for a fourth time to elect a successor to President Michel Aoun, with lawmakers divided over a candidate opposed by the powerful Hezbollah movement. Already governed by a caretaker cabinet, crisis-hit Lebanon is hurtling towards an imminent power vacuum, with just days before the current president’s term finishes at the end of the month. Parliament speaker Nabih Berri called for another vote on Thursday in the hope of overcoming long-running arguments. A total of 50 lawmakers in Lebanon’s 128-seat parliament left their votes blank, many from Iran-backed He…