Wall St dives as Iran war heats up, soaring crude prompts flight to safety
* Indexes down: Dow 1.22%, S&P 500 1.12%, Nasdaq 1.41% * Iran’s new Supreme Leader Mojtaba Khamenei vows to keep Strait of Hormuz shut * Oil surges as tankers set ablaze in Middle East * Trump explores possible waiver of Jones Act to ease oil cost pressures * Big banks fall on rising credit quality…