Ayatollah Ali Khamenei’s assassination brings Iran’s clerics the colossal task of picking his successor. They have only done so once, four decades ago. The killing of Ayatollah Ali Khamenei in the US-Israeli air attacks has thrust Tehran to a pivotal crossroads as the ruling establishment looks to pick the late Supreme Leader’s successor. Several senior leaders close to Khamenei were also killed in the attack, including his top security adviser Ali Shamkani and Islamic Revolutionary Guard Corps (IRGC) commander-in-chief Mohammad Pakpour. Tehran on Sunday targeted more sites in Gulf countries in retaliation as it vowed to avenge the killing of Khamenei. Meanwhile, US President Donald Trump has warned against the retaliatory attacks and suggested that the strikes on Iran would continue. ...