Stock Market Today: Sensex Down 230 Points, Nifty Loses 100 Points in Early Trade As Markets Open on Cautious Note Amid US-Iran Tensions 'Cannot Afford to Depend on AI Models Coming From Abroad': DRDO Chief Chandrika Kaushik Calls for Indigenous AI in Defence Sector Grammy Winner SZA Attends Maha Shivratri 2026 at Isha Yoga Center (Watch Video)