On April 23, 2026, global energy markets experienced significant volatility as Iranian naval forces reportedly fired on three commercial vessels in the Strait of Hormuz. The incident, confirmed by the U.K. Maritime Trade Operations (UKMTO) and regional security monitors, occurred amid a tightening U.S. naval blockade of Iranian ports. Following the reports of the engagement, Brent crude oil futures surged past the $100 per barrel threshold, reaching a high of $103.30 during early trading sessions on Thursday.
The Islamic Revolutionary Guard Corps (IRGC) reportedly targeted the vessels after the United States government maintained its maritime blockade, which was first implemented on April 13, 2026. While two ships, identified as the MSC Francesca and the Epaminondas, were seized and escorted to the Iranian coastline on Wednesday, a third vessel sustained heavy damage to its bridge after coming under fire approximately 15 nautical miles northeast of Oman on Thursday morning. The IRGC issued a statement via state media asserting that the vessels were operating without necessary permits and had tampered with their navigation systems, declaring that safety in the strait remains a red line for Tehran.
The escalation has driven a sharp rally in petroleum benchmarks. Brent crude, the international standard, rose by more than 1.3% on Thursday to settle at $103.30 per barrel, representing a 35% increase from pre-conflict levels. West Texas Intermediate (WTI) crude futures similarly climbed, increasing 4.02% to reach $96.69 per barrel. Analysts from Trading Economics and MUFG Research noted that the effective closure of the strait, which typically handles 21% of global oil consumption, has created extreme stress in energy supply chains.
Regional financial markets responded to the heightened geopolitical tension with significant declines. In India, the BSE Sensex and NSE Nifty 50 indices tumbled in early trade on Thursday. The Nifty 50 dropped 175.75 points to 24,202.35, while the Sensex recorded a decline of nearly 1% following a 756-point loss the previous day. Market data indicated that foreign institutional investors offloaded equities worth over 2,078 crore rupees as uncertainty grew. Simultaneously, the Indonesian rupiah weakened against the U.S. dollar, falling to its lowest level in eighteen months as Bank Indonesia officials monitored sudden capital outflows from the region.
In Washington, President Donald Trump announced an indefinite extension of the current ceasefire with Iran but clarified that the naval blockade on Iranian petroleum exports would remain in effect. The U.S. Department of Defense reported that the blockade has already diverted at least 28 vessels attempting to reach Iranian ports. Meanwhile, the Pentagon informed Congress that clearing sea mines reportedly laid in the waterway could take up to six months, suggesting a prolonged disruption to international shipping traffic through the Persian Gulf.