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US-Iran Tanker War Sends Brent Crude Above $100 a Barrel

The US-Iran military confrontation escalated sharply in early September 2026 when American forces destroyed five Iranian oil tankers, prompting Iran to retaliate by striking Al-Azraq base in Jordan and attacking at least ten vessels near the Strait of Hormuz. Iran's Islamic Revolutionary Guard Corps simultaneously announced it would designate a restricted maritime zone stretching from Chabahar into the Gulf of Oman and Arabian Sea, further threatening the world's most critical oil chokepoint. Ship-tracking data showed transits through the Strait of Hormuz dropping from an average of 12 vessels per day to just six, triggering the first breach of $100 per barrel for Brent crude since July.

The conflict has cascading economic effects across multiple continents. Houthi rebels in Yemen, emboldened by the broader regional confrontation, launched fresh attacks on Saudi oil infrastructure, wounding 73 people and prompting Pakistan's defence minister to warn that the trilateral Makkah Defence Alliance between Pakistan, Saudi Arabia, and Turkey could become operational. Iraq reported that an unidentified object struck a fuel oil storage vessel in its territorial waters. Iran also condemned the US strikes and declared its conditions for ending hostilities, even as fighting continued around the strait despite an April ceasefire agreement.

The price shock is rippling globally: food exporters like Japan's Ajinomoto are raising prices for consumer goods, Cambodia's floating schools face higher fuel costs, and Latin American economies are absorbing the oil surge unevenly. Iran's central bank has quietly encouraged traders to repatriate funds via cryptocurrencies to bypass sanctions, according to financial sources, while US Treasury Secretary Scott Bessent separately warned currency traders not to bet against the yen following earlier intervention. With no diplomatic road map in sight — Qatar and Pakistan have relayed that Washington will not return to any prior agreement — the risk of sustained supply disruption and global inflation pressure remains the dominant market and geopolitical concern.