Iran’s Islamic Revolutionary Guard Corps (IRGC) has announced another round of missile and drone strikes against ships it says are violating Iranian routing requirements in the Strait of Hormuz, signaling an intensification of its months-long campaign to assert control over the waterway. Roughly one-fifth of the world’s oil supply passes through the strait each day, making further incidents a potential source of energy-price shocks. The operational tempo dates back at least to June 2026, when a cargo ship was reportedly hit by a projectile about 7.5 nautical miles off Oman. By July, the IRGC said it had stopped multiple tankers that lacked what it considered proper authorization. Shipping traffic remains below pre-conflict levels, while independent verification of reported strikes is limited and U.S. and UK maritime authorities have offered alternative accounts of several incidents. The escalation has also pushed up war-risk premiums, increasing the financial burden on maritime operators, particularly smaller companies.