When targeted by nationwide protests early this year, Iran’s Supreme leader Ayatollah Ali Khamenei unleashed the bloodiest crackdown of his nearly four decades in power. But now a US or Israeli military strike has ended his rule. Iran’s state TV confirmed Khamenei’s death on Sunday, a day after after US President Donald Trump said the 86-year-old was dead. Israeli officials also told reporters earlier that he was killed in a major new attack by US and Israeli forces. Khamenei tried to avert such...