S&P 500 Index futures tumbled 1.5% at 7:34 a.m. in New York following President Donald Trump's remarks that dampened hopes for a swift resolution to the conflict in Iran. The selloff reflects growing investor anxiety about geopolitical tensions and their potential impact on global markets.

Trump's comments dashed optimism that had been building around possible diplomatic progress, sending futures sharply lower before the opening bell. Energy sector stocks, particularly Chevron, faced pressure as crude oil prices reacted to the heightened uncertainty in the Middle East. Technology and growth stocks also declined in premarket trading.

The market reaction underscores how quickly sentiment can shift based on political developments. Investors are now reassessing risk exposure as the situation in Iran remains fluid, with no clear path to de-escalation in sight.