U.S. stock futures are showing a downward trend as tensions between the U.S. and Iran escalate following recent military strikes, contributing to a rise in oil prices above $90 per barrel. The market sentiment is further weighed down by looming inflation data, with traders bracing for a key PCE inflation reading. Despite previous record highs, investor confidence is faltering amid fears of ongoing Mideast hostilities. Key equity indexes, including the Dow, S&P 500, and Nasdaq, are expected to open lower as focus shifts to the impact of rising oil prices and bond yields on the market outlook.