Ayatollah Ali Khamenei has not only picked replacements in his chain of military command in case they are killed in Israeli strikes, he has also named three senior clerics to replace him should he, too, be slain.Ayatollah Ali Khamenei has not only picked replacements in his chain of military command in case they are killed in Israeli strikes, he has also named three senior clerics to replace him should he, too, be slain.