On September 8th, the US Central Command announced that American forces had destroyed five Iranian crude oil transport vessels near the Gulf of Oman and Iran's Kharg Island. This operation was in retaliation for two separate ballistic missile attacks launched by Iran's Islamic Revolutionary Guard Corps (IRGC) against US naval vessels. The escalating maritime conflict between Washington and Tehran has driven Brent crude prices to surge, reaching $99.46 per barrel.
The US Central Command identified the targeted vessels as the Kaviz, Charminar, Horizon 1, Riesco, and Derya. The first four ships were located in the Gulf of Oman, while the Derya was positioned near Kharg Island, Iran's primary oil export facility. According to US officials, military personnel ordered crew members to abandon ship prior to the strikes, after which the vessels were either destroyed or rendered inoperative. Iran's state television also reported on the attacks occurring off the southern coast near Jask Port and the Kharg Island anchorage, confirming that the crews had been evacuated. No casualties among the crews have been reported so far.
The US Central Command stated that the IRGC had previously launched ballistic missiles twice at an American warship patrolling the area. The vessel successfully evaded the attacks, and no US personnel were injured. Washington has therefore framed this latest action against the tankers as a retaliatory measure. Additionally, US authorities claim these oil tankers belonged to a shadow transport network that provides funding for the IRGC and its regional allies. Complete information regarding ship ownership, the volume of crude oil aboard, and any leakage resulting from the attacks remains publicly unavailable.
This incident marks the second time within a matter of days that the US military has concentrated attacks on Iranian oil tankers. On September 5th, the US Central Command announced it had destroyed three Iranian crude carriers following an attempted attack by Iranian forces on a US aircraft carrier and a missile destroyer.
Following the US strikes on the oil tankers, Iran announced it had launched missiles at US military targets in Jordan. Jordan's military reported that its air defense systems intercepted 18 ballistic missiles, while two others landed in uninhabited areas, with no casualties reported. In a further escalation, the IRGC Navy issued warnings for crews of tankers anchored near Kuwaiti and Bahraini ports to evacuate their vessels, accusing both nations of supporting US operations. These statements have significantly heightened market anxieties regarding the safety of commercial shipping in the Gulf region.
US Secretary of State Marco Rubio stated that attacks by Iran on US naval vessels would not go unanswered, cautioning that Iran could expect to lose more tankers with each attempt. These remarks indicate that Washington is linking its strikes on Iran's oil transportation capabilities with the protection of its naval operations.
On the day of the attacks, Brent crude prices spiked to $99.46 per barrel. The price surge, however, is influenced by a confluence of factors including the US-Iran skirmishes, restricted passage through the Strait of Hormuz, and attacks on energy facilities in the Gulf region, meaning not all gains can be attributed solely to the tanker strikes. Over the past few months, some oil traders have developed an empirical view: when Brent or NYMEX crude persistently breaches the $100 per barrel threshold and begins to push up US gasoline prices and inflation expectations, the likelihood of the Trump administration taking de-escalatory steps or signaling negotiations increases.
This trading logic has been supported by price action on multiple occasions. After prices broke above $100 in early March, President Trump quickly signaled that military operations might be nearing an end, leading Brent to fall back to around $85 per barrel. Following the two-week ceasefire agreement between the US and Iran on April 7th, Brent crude dropped 13.3% in a single day to $94.74 per barrel. In early May, prices briefly surged to $126, but after the US government pushed for a negotiation framework with Iran, Brent crude fell by as much as 11% in one day, again dipping below $100.
These experiences have solidified $100 per barrel as an informal benchmark for traders assessing the limits of US policy tolerance. The transmission mechanism primarily runs through US gasoline prices, household inflation expectations, bond yields, and electoral pressures. The longer crude prices remain above this level, the higher the domestic economic costs for the Trump administration in continuing its expanded military actions. As US forces destroyed the five Iranian tankers, Brent crude was already approaching that critical $100 threshold.