Former U.S. Ambassador to Israel Dan Shapiro is warning that President Donald Trump’s rhetoric and military posturing suggest he may contemplate a direct attempt on Ayatollah Ali Khamenei’s life, but he argues such a move would be a dramatic escalation that would not by itself achieve regime change in Iran. Trump, meanwhile, is publicly intensifying his personal attacks on Khamenei and openly calling for “new leadership in Iran,” even as reports indicate he has delayed planned strikes at the urging of Israeli Prime Minister Benjamin Netanyahu.