President Donald Trump escalated his confrontation with Iran to a new and dangerous threshold on Saturday evening, issuing a stark 48-hour ultimatum demanding that Tehran fully reopen the Strait of Hormuz — or face U.S. military strikes on its power infrastructure. The threat, posted on Truth Social, sent shockwaves through international markets and drew an immediate vow of devastating retaliation from Iranian officials, pushing the already-volatile 23-day-old conflict deeper into uncharted territory.
Trump’s Ultimatum in His Own Words
At 7:44 p.m. ET on Saturday, Trump posted a characteristically blunt warning directed at the Iranian government. “If Iran doesn’t FULLY OPEN, WITHOUT THREAT, the Strait of Hormuz, within 48 HOURS from this exact point in time, the United States of America will hit and obliterate their various POWER PLANTS, STARTING WITH THE BIGGEST ONE FIRST!” he wrote, deploying all-capital emphasis on key words.
The 48-hour clock set by Trump’s post expires at approximately 7:44 p.m. ET on Monday — 3:14 a.m. Tuesday morning in Tehran. Administration officials have not elaborated publicly on which specific facilities are being targeted or whether diplomatic back-channels remain open ahead of the deadline.
The ultimatum marks a notable reversal from signals Trump sent just days earlier. The president had briefly floated the possibility of winding down the conflict without requiring Iran to reopen the strait, a position that drew sharp criticism from hawkish allies and market analysts alike. His Saturday post made clear that the Strait of Hormuz is now a non-negotiable red line for his administration.
Iran Vows to ‘Irreversibly’ Destroy Regional Energy Infrastructure
Tehran wasted little time in responding. Iranian parliament speaker Mohammad Bagher Ghalibaf issued a direct counter-threat on Sunday, warning that any U.S. strike on Iranian power plants would trigger immediate and sweeping retaliation against energy infrastructure across the broader region.
“Immediately after the power plants and infrastructure in our country are targeted, the critical infrastructure, energy infrastructure, and oil facilities throughout the region will be considered legitimate targets and will be destroyed irreversibly,” Ghalibaf declared. In a separate post on X, the parliament speaker elaborated: “Critical infrastructure, energy and oil across the region will be irreversibly destroyed and oil prices will rise for a long time.”
Iran’s military went even further, announcing that the Strait of Hormuz would be “completely closed” indefinitely if Trump follows through on his threat. The strategic waterway, through which roughly one-fifth of the world’s oil supply flows, has already been severely disrupted since the onset of the current conflict, contributing to a dramatic spike in energy prices globally.
Day 23: Ongoing Military Operations and Iranian Missile Strikes
Sunday marked the 23rd consecutive day of active U.S. and Israeli military operations against Iran. Admiral Brad Cooper, commander of U.S. Central Command, confirmed that American forces had dropped multiple 5,000-pound bombs on an underground facility located along Iran’s coast. The facility, according to Cooper, had been used to store antiship cruise missiles and mobile missile launchers, and also housed “intelligence support sites and missile radar relays” used to monitor commercial and military ship movements in the Gulf.
Meanwhile, Iran demonstrated that its own offensive capabilities remain intact. Iranian ballistic missiles broke through Israeli air defenses in the south of the country on Saturday, striking directly in the cities of Dimona and Arad. The strikes wounded approximately 100 people, according to Israeli emergency services. Israeli officials said U.S. and Israeli strikes would “increase significantly” in the week ahead, indicating no near-term easing of military pressure.
Energy Markets Rattle as Deadline Approaches
The economic stakes of the standoff are difficult to overstate. The national average price of a gallon of regular gasoline climbed to $3.94 on Sunday morning, according to AAA — an increase of more than a dollar per gallon compared to just one month ago. Brent crude oil, the global benchmark, has surged nearly 50 percent since the war began, reaching $112 per barrel.
In a move that underscored the administration’s awareness of domestic economic pressure, the White House granted a temporary license allowing Iran to sell approximately 140 million barrels of crude oil to international buyers, a measure aimed at calming jittery energy markets even as military tensions continued to rise.
Analysts warn that if either side acts on its threats — the U.S. targeting Iranian power plants, or Iran closing the strait and destroying Gulf energy facilities — the economic fallout could be severe and prolonged. The Strait of Hormuz is not simply a strategic military chokepoint; it is the artery through which Saudi Arabia, the United Arab Emirates, Kuwait, and Iraq all export the bulk of their oil.
What Comes Next
The hours between now and Monday’s deadline will be closely watched by foreign capitals, energy traders, and military planners alike. As of Sunday, there was no public indication from Tehran that it intended to comply with Trump’s demand. Iranian officials have consistently maintained that any easing of restrictions on the strait would be contingent on a broader ceasefire and withdrawal of U.S. forces from the region — conditions the Trump administration has so far declined to meet.
The confrontation between Washington and Tehran is rapidly approaching a decision point that could either escalate into an even wider regional conflict or force both sides to find a diplomatic off-ramp. With Monday evening’s deadline looming, the next 24 hours may prove to be among the most consequential of the Trump administration’s second term.