U.S. stock-index futures fell and crude oil prices rose Friday after President Donald Trump said Iran's latest peace offer was "totally unacceptable" [1].

The rejection signals a renewal of diplomatic pressure on Tehran, creating immediate volatility in global energy and equity markets. Investors typically react to heightened geopolitical tension in the Middle East with caution, fearing disruptions to oil supplies.

Market data showed a broad decline across major indices. S&P 500 futures fell 1.24% to 7,408.50 [2], while Nasdaq Composite futures dropped 1.54% to 26,225.14 [2]. The Dow Jones Industrial Average futures fell 537.29 points, a decline of 1.07%, to reach 49,526.17 [2].

The instability extended to Asian markets, where Japan's Nikkei slipped 0.2% [2]. In the energy sector, U.S. crude futures rose as much as 3% during early trading [3] following the news of the renewed hostilities.

Trump has maintained a hard line on the conflict, though he later said the situation was "very much under control" [4]. Despite those assurances, the immediate reaction from traders suggests a lack of confidence in a swift diplomatic resolution.

The volatility reflects a recurring pattern where U.S. foreign policy shifts regarding Iran directly impact the price of crude oil. Because the U.S. and Asian markets are deeply intertwined, a single statement from the White House can trigger a synchronized downturn across different time zones.

"totally unacceptable"

The market's reaction underscores the sensitivity of global energy prices to U.S.-Iran relations. By rejecting the peace offer, the administration has prioritized maximum pressure over immediate stability, which may lead to sustained volatility in oil futures and a risk-off sentiment in equity markets until a new diplomatic framework is established.