NPR reported that the ultimatum included a midnight deadline, though administration officials later suggested the timeline was "illustrative rather than absolute." The Pentagon confirmed that additional strike aircraft had been moved to bases in the Gulf region.

Within six hours of Trump's statement, Iran's Revolutionary Guard Corps issued a terse announcement: "Passage through the Strait of Hormuz is open to commercial traffic. Vessels should maintain standard maritime protocols."

The rapid reversal suggests Tehran concluded that the costs of maintaining the blockade—both economic and military—had become untenable. Iranian officials have not publicly acknowledged the Trump ultimatum as a factor in their decision.

Energy Security and Broader Implications

The Strait of Hormuz serves as the primary conduit for approximately 21 percent of global petroleum consumption, with more than 21 million barrels of crude oil and refined products passing through daily. The four-day closure sent oil prices surging above $130 per barrel and prompted emergency releases from strategic reserves in the United States, Japan, and several European nations.

Energy analysts noted that even a brief disruption revealed the fragility of global supply chains. "We came within hours of a genuine crisis," said Helima Croft, chief commodities strategist at RBC Capital Markets. "Another week of closure would have triggered rationing in some markets."

The reopening does not resolve underlying tensions between Washington and Tehran. U.S. officials indicated that naval patrols in the Gulf would continue at current levels, and Iran has not withdrawn the additional Revolutionary Guard vessels deployed to the Strait region since late April.

The attack on the French vessel remains under investigation. France has requested an emergency meeting of the United Nations Security Council to address what French officials called "state-sponsored maritime terrorism," though they have not formally accused Iran of responsibility.

To understand today's headlines, we must look at yesterday's decisions. The pattern of escalation and de-escalation in the Gulf has defined U.S.-Iranian relations for decades. This latest cycle demonstrates that both sides retain the capacity to step back from the brink—but also how quickly miscalculation can bring them to it.