President Trump's prime-time address to the nation undercut market optimism about a swift end to the Middle East conflict, triggering a sharp sell-off in equities and a surge in oil prices. Brent crude climbed close to $108 a barrel after dipping below $100 Wednesday, while Asian stocks reversed early gains to close lower. U.S. equity futures indicated further declines, reflecting investor anxiety over prolonged hostilities. The speech offered no clear exit timeline and threatened additional attacks against Iran, directly contradicting hopes for diplomatic resolution.

This reversal followed a brief period of optimism following recent diplomatic engagements. Brent crude's rebound from Wednesday's sub-$100 level underscores heightened geopolitical risk premiums. Asian markets, which had rallied on hopes for conflict de-escalation, capitulated as the speech emphasized continued military pressure. U.S. futures pointed to a potentially volatile session, with energy and defense sectors likely to face particular scrutiny.

The market's immediate reaction highlights the delicate balance between geopolitical tensions and investor sentiment. While Trump's rhetoric may reassure hardliners, it risks exacerbating energy price volatility and undermining global economic confidence. The lack of a concrete peace framework leaves traders navigating uncertainty, with oil prices remaining a critical barometer for the conflict's trajectory.