Oil Markets Volatile as Iran-US Ceasefire Hangs in Balance

Oil prices swung sharply on Wednesday as renewed attacks on commercial vessels in the Strait of Hormuz threatened to derail a fragile U.S.-Iran ceasefire. Brent crude futures retreated from brief gains above $100 a barrel after Iran fired on multiple ships and seized two container vessels, according to international shipping reports and state media.

The escalation came a day after President Donald Trump announced an indefinite extension of the ceasefire, which had been set to expire on Tuesday. Despite the diplomatic gesture, Iran’s Revolutionary Guard Corps opened fire on three ships in the vital waterway, damaging one and taking custody of the Panama-flagged MSC Francesca and Liberia-flagged Epaminondas, Iranian state media reported. A third vessel was reportedly fired upon but not seized.

Shipping traffic in the Gulf stalled following the attacks, with vessels forced to withdraw or reroute. The disruptions evoked memories of the strait’s closure earlier in the conflict, when U.S. And Israeli strikes on Iran prompted retaliatory actions that blocked oil flows and sent global prices spiking.

Analysts noted that even if diplomatic talks resume in Islamabad as planned, restoring full shipping capacity could take months. The prolonged uncertainty has kept oil markets on edge, with prices reacting sensitively to every development in the negotiations and military posturing.

While Iran declared the Strait of Hormuz fully open to commercial traffic on Friday, crude prices tumbled more than 10% in response. That optimism quickly faded as Tehran reasserted control after the U.S. Maintained its naval blockade of Iranian ports, leading to renewed clashes and the seizure of vessels.

The situation underscores the strait’s critical role in global energy supply, with nearly a fifth of the world’s oil passing through its waters. Any sustained disruption risks triggering broader market volatility and inflationary pressures far beyond the Middle East.

As diplomatic efforts stall and military activity intensifies, investors remain watchful for signs of either de-escalation or further deterioration in the U.S.-Iran standoff.