U.S. forces targeted three crude oil tankers linked to Iran’s Islamic Revolutionary Guard Corps on September 5, 2026, in response to ballistic missile launches toward a U.S. aircraft carrier and destroyer, in an escalation that extends the confrontation to Tehran’s oil-transport network and increases risks to shipping and the environment in the Strait of Hormuz and Gulf of Oman.
Two tankers disabled and a third destroyed
U.S. Central Command said the two warships evaded the missile attacks without any U.S. personnel being injured. It added that the strikes disabled the Dauni tanker off Kharg Island and the Stark 1 tanker near Jask, while destroying the empty Kailo tanker, also known as Knoxen, in the Gulf of Oman after its crew was ordered to leave.
U.S. Central Command said the three tankers were part of a multibillion-dollar network that finances the Islamic Revolutionary Guard Corps and its regional allies. This approach places Iran-linked oil tankers among the targets of the U.S. military response, rather than limiting the confrontation to military vessels and facilities.
Targeting two U.S. vessels will be met with a higher economic cost imposed through the destruction of three vessels.
Cooper described the strikes as a message to the Islamic Revolutionary Guard Corps, threatening to target more of Iran’s oil fleet if Washington deems it necessary to defend its forces.
Iranian response and accusations against Washington
Iranian television reported that Tehran later targeted three tankers and three U.S. vessels in response to the strikes, a claim that could not be independently verified. Iran’s Foreign Ministry was also quoted as describing the U.S. attacks as a war crime and holding Washington and its allies responsible for the consequences of continuing the operations.
Environmental risks and pressure on shipping
A technical assessment of the strikes indicates that targeting engine rooms and fuel tanks could disable the tankers without directly hitting their main cargo. However, the presence of oils, fuel and flammable gases leaves open the possibility of fires, leaks and pollution, even when a tanker is empty of crude oil.
The U.S. escalation relies on air and naval superiority and pressure on Iran’s oil-transport network, while Tehran uses asymmetric maritime tactics in the Strait of Hormuz. Because the confrontation is taking place in this waterway, damage to a single commercial vessel could affect transit and insurance decisions and increase pressure on shipping traffic.
