US-Iran escalation threatens Mideast ceasefire as Hormuz traffic plummets

The fragile peace that had held the Middle East for three months shattered this week into the heaviest exchange of fire since an April ceasefire. US warplanes, naval vessels, and drones struck dozens of Iranian targets across the southern and western reaches of the country, beginning just after 2 a.m. on Sunday. The strikes targeted military installations near the Strait of Hormuz and in Khuzestan province, with the US Central Command saying the aim was to degrade Iran's capacity to threaten international shipping. At least two people died in the bombardment—one killed and four wounded at a water pumping station in Mahshahr, in Iran's southwest.

Tehran responded within hours. The Islamic Revolutionary Guard Corps announced a coordinated barrage of missiles and drones aimed at military bases across the Gulf: Prince Hassan Air Base in Jordan, Sheikh Isa in Bahrain, and Ali Al Salem and Ahmad Al Jaber in Kuwait. The Guards claimed the strikes had set fires in fuel storage tanks and ammunition depots. Air raid sirens wailed across Bahrain. Kuwait's military said it was intercepting hostile aerial targets. Jordan's army reported shooting down four Iranian missiles. The cycle of escalation had returned with a force not seen since the ceasefire took hold.

The June agreement—formally called the Islamabad Memorandum of Understanding—now hung in the balance. Iran's foreign ministry spokesman Esmaeil Baqaei declared the document "in crisis," saying that each time the other side failed to meet its obligations, Tehran would do the same. He warned that US attacks had "rendered futile all efforts" at establishing lasting peace. Yet even as he spoke, Iranian negotiators continued talks with mediators from Qatar, Pakistan, and Oman, suggesting that neither side had fully abandoned the diplomatic track. US President Donald Trump had called the agreement "over" earlier in the week but left the door open for further negotiations. Pakistan's Deputy Prime Minister Ishaq Dar phoned Iran's Foreign Minister Abbas Araghchi to urge de-escalation, a sign that intermediaries were scrambling to prevent total collapse.

The strategic prize at stake was control of the Strait of Hormuz, the narrow waterway through which roughly one-fifth of the world's oil flows. Iran's IRGC claimed the strait was "closed" and warned that it would remain so until the US ended its military presence in the region. An adviser to Iran's supreme leader said control of the strait was worth more than "dozens of atomic bombs." The US military countered that the waterway remained open to lawful transit. The dispute was not academic. On Sunday, Iranian forces attacked a commercial vessel in the strait, forcing the crew to abandon ship as it caught fire.

The renewed violence sent immediate tremors through global energy markets. Oil prices jumped as much as 4.5 percent, with the US benchmark WTI crude climbing to nearly $74 a barrel on fears that supply could be choked off. More telling was what happened to actual traffic. The number of tankers moving through Hormuz fell to its lowest level in two months, according to shipping data analyzed by Kpler. Many vessel operators began switching off their public tracking systems, making it impossible to know the full picture of what was moving through the strait. A handful of ships conducted transfers of oil to other vessels outside Hormuz, off Oman's coast, a workaround that had become routine since the conflict began in late February. One shipping official described the situation as "a managed conflict now similar to the Houthis in the Red Sea"—a reference to the Yemeni armed group that had paralyzed traffic through another critical waterway for nearly two years.

Analysts warned that a prolonged closure of Hormuz would hit a world already running on fumes. Global oil inventories had been rapidly depleted in recent months. If the strait were to shut down for an extended period, the result would be "much tighter supply, higher prices and significant downside risk for tanker markets," according to ship broker Gibson. The US Navy-led Joint Maritime Information Centre reported that commercial traffic was continuing at "reduced levels," with vessel operators moving cautiously in the wake of recent attacks. The question now was whether the diplomatic machinery could reassemble the ceasefire before the economic pressure became unbearable—or whether the logic of escalation would pull both sides toward something far worse.