Key Takeaways:
The US military's first attack on a vessel inside the Persian Gulf since reimposing its blockade signals a significant escalation in the campaign to cut off Iran's oil revenue.
The US Central Command said an American aircraft fired missiles at the unladen and US-sanctioned supertanker Belma early Thursday after the vessel repeatedly ignored warnings that it was violating the blockade by sailing through international waters toward Kharg Island, Iran's primary crude export terminal. The strike deep inside the Persian Gulf, far from the Strait of Hormuz, marks a departure from the initial blockade that focused on intercepting vessels attempting to cross an American-imposed line beyond the waterway in the Gulf of Oman.
"While this is new in terms of the implementation occurring within the gulf, it's still consistent with their stated goal of blockading all Iranian ports and coastal areas," said Jennifer Parker, an adjunct professor at the University of Western Australia Defence and Security Institute.
Ship-tracking data showed the Belma sailing north toward Kharg late Wednesday before making a sharp turn away after being hit. Centcom said it had redirected two compliant commercial vessels and disabled one non-compliant ship in the first 24 hours of the renewed blockade, which took effect at 4 p.m. Washington time on Tuesday. The strike comes after the US reimposed its maritime blockade on July 14, following a three-week interim peace deal that had temporarily eased restrictions.
The escalation is already reshaping oil markets and shipping patterns. Spot prices for Middle Eastern crude rose this week, with the market shifting into backwardation — where front-month contracts trade above deferred contracts — signaling supply tightness. Tanker traffic through the Strait of Hormuz collapsed on Sunday, with only six vessels completing the transit, all operating with their Automatic Identification System transponders disabled, according to preliminary data from Kpler. By Monday morning, no ships were observed transiting based on AIS signals.
Shadow Fleet and Covert Operations
Satellite imagery from the EU Copernicus program shows at least four oil tankers with transponders turned off conducting ship-to-ship cargo transfers near Fujairah Port in the UAE and Sohar Port in Oman, suggesting covert passage operations as vessels seek to avoid detection and evade sanctions. Maritime intelligence firm Windward identified 23 Iranian-flagged vessels operating within the Strait of Hormuz that are flying false flags, disabling AIS transponders, or otherwise disguising their activities. Of those, 10 are loaded with cargo while 13 are empty, according to cargo tracking service Vortexa.
Iran has a long track record of evading sanctions through complex networks of shell companies and clandestine crude transfers, said Adnan Mazarei, a senior fellow at the Peterson Institute for International Economics and former deputy director of the International Monetary Fund. TankerTrackers data shows Iran exported approximately 50 million barrels of crude in June and 10 million barrels in a single day last week, even during the period when Iranian crude was temporarily exempt from sanctions under the now-expired memorandum of understanding. Seven fully laden giant tankers that transited the strait during the ceasefire are now waiting in the Indian Ocean for buyers, according to Windward.
Market and Economic Fallout
The Strait of Hormuz handles about 21% of global oil trade, making any sustained disruption a direct threat to energy markets. The head of the International Energy Agency warned that the global economy might once again be in peril if the conflict choking the strait is not resolved within weeks. Qatar's Transport Ministry issued an urgent advisory suspending all maritime vessel activity until further notice — the first blanket maritime suspension by a Gulf state since the conflict began, according to Windward.
Goldman Sachs said in a July 15 report that even after geopolitical tensions ease, the next phase of Persian Gulf shipping recovery could be slower than the initial phase, noting that cargo flows through Omani and international shipping lanes have plunged following recent tanker attacks. The US Navy said it would allow shipments of bulk food, medical supplies, and other goods necessary to the survival of Iran's civilian population through the blockade after vetting vessel requests.
Iran relies on oil sales for approximately 50% of its revenue, and China imports roughly 80% of Iranian crude despite US sanctions, according to the US Energy Information Administration. The initial blockade drove Iran's inflation rate to 50% over the past 12 months — the highest since World War II — with food inflation running above 100%. With roughly 90% of Iran's trade passing through the Persian Gulf, a prolonged blockade would deepen the economic toll significantly.
This article is for informational purposes only and does not constitute investment advice.
