Iranian Supreme Leader Ayatollah Ali Khamenei was killed in a major attack on Iran launched by Israel and the United States, President Donald Trump said, calling it the “single greatest chance” for the Iranian people to “take back” their country.The death occurred after a joint U.S. and Israeli aerial bombardment that targeted Iranian military and governmental sites. Trump said the “heavy and pinpoint bombing” was to continue through the week or longer. There was no immediate comment from Iran on Khamenei's status.