Sensex drops 368 points, Nifty at 23,688 amid Middle East tensions

Indian markets opened lower on Tuesday, with the Sensex down 368 points at 76,657.02 and the Nifty 50 falling 90 points to 23,688.70. Both indices had closed at six-week lows a day earlier amid rising crude prices and Middle East tensions. Iran's retaliation threat against US assets and Gulf energy infrastructure has added to investor concerns.