Stock Market Update: Sensex Falls 829 Points, Nifty Slips as West Asia Tensions and Rising Crude Oil Prices Weigh on Markets ‘Will Not Forgo Vengeance’: Iran’s New Supreme Leader Ayatollah Mojtaba Khamenei Says in First Statement, Signals Tough Response India Rejects ‘5-Day Delay’ Claim in Signing Condolence Book for Ayatollah Khamenei, Calls It ‘Ill-Informed’