Indian stock markets fell sharply on Monday, with the benchmark BSE Sensex slipping below the 82,000 mark amid rising geopolitical tensions and investor caution. Weak global cues, including volatility in U.S. markets and crude oil price fluctuations, compounded domestic concerns, prompting profit-taking in key sectors. Market analysts pointed out that heightened uncertainty over international relations and macroeconomic stability has triggered short-term selling, particularly in banking, energy, and IT stocks.