Indian equity markets are likely to open weaker on Monday as the global risk sentiment is expected to be impacted by the heightened geopolitical tensions in the Middle East as a result of the escalation of hostilities between Israel and Iran.On the closing bell on Friday, the Sensex declined 961.42 points (1.17 per cent) to settle at 81,287.19. The Nifty plummeted 317.90 points (1.25 percent) to end up at 25,178.65.Indian equities have been unpredictable in the recent weeks, often giving up early gains, as key indicators continue to struggle to break the previous peak levels, signalling a significant resistance at higher zones.Market traders have been on the edge for quite some time due to concerns around US President Donald Trump’s tariff threats, fears over AI-related estimations and the ongoing global unrest. Now, the US, Israel and Iran conflict have sparked a global uncertainty, worries around price of crude oil and stock market outlook.Experts say Indian equity indices will face a selling pressure, owing to these developments. The Strait of Hormuz will be the most crucial hotspot in any prospective war with Iran as almost 20 percent of the world’s oil supply passes via this narrow waterway, they added.According to projections, oil prices could spike up to $100 per barrel if the Strait of Hormuz is closed. The implications are especially high for India, as multiple reports suggest that 60 percent of the country’s LPG imports and about 50 percent of oil imports make its way via the Strait. So, any instability in this route will have immediate and significant macroeconomic effects.Additionally, the spike in oil prices imply a significant macro risks as India imports more than 75 percent of its petroleum needs. These risks include rise in inflation, expansion of the current account imbalance, and effect on the RBI’s rate curve.