For weeks, President Donald Trump issued ultimatums over the Strait of Hormuz, demanding that Iran restore free passage for international shippers and threatening severe military consequences if it refused. The warnings were pointed, the deadlines were specific and the language was unmistakable in its aggression.
Iran did not comply. It held its position and continued to police traffic through the 21-mile-wide waterway, reducing ship passage to a fraction of prewar levels and, more recently, moving toward charging vessels a fee for the right to pass through at all.
By Thursday, something had shifted. At a Cabinet meeting, Trump openly acknowledged Iran’s ability to exert that kind of control over the strait, noting that the fee arrangement was already taking shape in practice. He stopped short of approving it but made clear it was happening regardless. The comment marked a notable departure from the tone he had been striking just days earlier, when he demanded Iran fully open the waterway without condition or threat.
The shift reflects a central challenge for the White House as it attempts to wind down a conflict that has triggered what analysts are increasingly calling the largest oil shock in modern history. The Strait of Hormuz is not simply a pressure point. It is a chokepoint through which roughly 20 percent of the world’s oil supply flowed before hostilities began on Feb. 28. Since the United States and Israel launched their initial strikes, that traffic has nearly stopped entirely.
The weight of the oil shock
Oil prices have climbed approximately 40 percent since the war began, with international and domestic benchmarks both hovering around $100 a barrel. The economic alarm bells are growing louder. The chief executive of BlackRock warned this week that prices could reach $150 a barrel and tip the global economy into recession if Iran’s control over the strait persists beyond the end of active hostilities. Energy markets, already strained, are watching the diplomatic track closely for any sign of a durable resolution.
Trump has also raised the possibility of ending the war and leaving the strait situation for others to resolve, a scenario that outside observers have described as economically dangerous and unlikely to calm markets on its own.
Four ultimatums and a narrowing window
The president’s escalating rhetoric began roughly 10 days into the conflict. His first public warning came on March 9, just hours after he had suggested the waterway would remain safe, when he threatened a response many times stronger than any previous strike if Iran interfered with oil shipments. A second warning followed the next day, focused specifically on mines. A third came on March 13, tied to strikes on military targets at Kharg Island and a promise to hit oil infrastructure if passage was disrupted further.
Trump then tried to enlist allied nations to help manage the strait before abruptly declaring the effort unnecessary. Last Saturday brought perhaps the most dramatic ultimatum yet, a 48-hour demand that Iran fully open the waterway or face strikes on power infrastructure. He later softened that position, pointing to what he described as productive conversations as justification.
After Thursday’s Cabinet appearance, he announced an additional 10-day pause on any plans targeting Iranian energy infrastructure, pushing the next potential deadline to April 6.
Small movements, large signals
Amid the standoff, a limited convoy of tankers moved through the strait this week under Pakistan’s flag. Pakistan is serving as a mediator in the ongoing peace negotiations, and the passage of those vessels drew Trump’s attention as evidence that talks were reaching the right people. The movement, however, represented a small fraction of the more than 100 ships that would typically transit the strait on any given day before the war.
Iranian state media confirmed the country intends to continue allowing passage for nations it considers friendly while the fee structure for other vessels takes shape. The bottom line, as Trump himself framed it Thursday, is that the strait reopening fully depends entirely on whether a deal gets done.
