Oil prices climbed sharply while global stocks wavered and mostly declined on Tuesday as President Donald Trump’s looming deadline for Iran to reopen the Strait of Hormuz or face escalated U.S. strikes heightened geopolitical tensions and investor anxiety.

Brent crude futures rose about 1% to trade near $111 per barrel, with U.S. West Texas Intermediate crude also pushing higher amid fears that prolonged disruption to the critical waterway through which a significant portion of global oil supplies passes could worsen energy shortages. Oil has surged more than 50% since the conflict intensified.

Meanwhile, major U.S. stock indexes showed mixed but largely cautious trading, with many shares slipping as investors weighed the risk of further military escalation, including potential strikes on Iranian power plants and infrastructure.

European and Asian markets were similarly tentative, reflecting broader concerns over inflation, energy costs, and economic fallout from the ongoing Middle East conflict.

Trump has set a firm deadline of 8 p.m. ET Tuesday (1 a.m. GMT Wednesday) for Iran to reach a deal and reopen the strait, warning of decisive action if unmet. He has threatened to “decimate” Iranian bridges and power plants, stating the country “could be taken out in one night.

”Iran has rejected recent ceasefire proposals, calling instead for a permanent end to hostilities, while markets remain on edge with no clear resolution in sight.

Analysts warn that sustained high oil prices could fuel global inflation and slow economic growth, though some investors still hope for a last-minute diplomatic breakthrough.

The developments come as the International Energy Agency has described the current oil and gas crisis linked to the Hormuz blockade as potentially more severe than previous major shocks combined.

US President Donald Trump says Iran could be “taken out” in one night as the deadline set for the country to open the Strait of Hormuz to shipping traffic approaches.

On Saturday, Trump gave Iran 48 hours to comply or risk facing “hell”.

He later threatened that the US would blow up Iran’s power plants and bridges if Tehran failed to adhere to his warning.

The US president said Iran had until Tuesday at 8 p.m. ET (1 am WAT) to make a deal.

In a press conference on Monday, Trump reiterated and intensified his threats.

“The entire country could be taken out in one night, and that night might be Tuesday night,” he said.

President Donald Trump gave Iran until Tuesday to open the Strait of Hormuz or face attacks on its power plants.

Consequently, U.S. crude oil futures for May pared earlier gains to rise 0.5% at $112.08 per barrel at 9:28 p.m. ET. International benchmark Brent prices for June delivery also scaled back to 1.3%, trading at $110.47 per barrel.

Trump gave the warning on Sunday in an expletive-filled social media post that Iran would be “living in Hell” if they do not open the Strait.

The president threatened to bomb the country’s power plants and bridges.Trump subsequently posted “Tuesday, 8:00 P.M. Eastern Time!” without further explanation.

Iran has effectively kept the Strait closed through attacks on oil tankers.

The sea route connects the Persian Gulf to world markets. About 20% of global supplies passed through the Strait before the war.

The closure of the Strait has triggered the largest oil supply disruption in history. Crude, jet fuel, diesel and gasoline prices have surged since the war started.