Iran warned early Monday that any attack on Kharg Island’s oil infrastructure would significantly impact global energy markets.

Alireza Tangsiri, commander of the Islamic Revolutionary Guard Corps (IRGC) Navy, said in a post on the US social media company X’s platform that targeting the infrastructure would alter global oil price dynamics.

“You tested Iran once with the Strait of Hormuz,” he said.

“If the smart control of the strait sketched a new index for oil prices, an attack on Kharg will create another dangerous and unprecedented equation for global energy rates and distribution.”

US President Donald Trump said Friday that the US destroyed all military targets on Kharg Island and threatened to attack the island’s oil infrastructure if Iran continued to block ships in the Strait of Hormuz.

Kharg Island is Iran’s main oil export hub, handling 90%-95% of the country’s crude exports. In 2025, the island handled an average of 1.54 million to 1.7 million barrels per day.

The island serves as a key component of Iran’s energy system and a vital source of government revenue.

Iran has effectively closed the Strait of Hormuz since March 1, following the launch of joint attacks by Israel and the US against the country on Feb. 28, which have so far killed around 1,300 people, including then-Supreme Leader Ayatollah Ali Khamenei. Hostilities have since escalated.

Iran has retaliated with drone and missile strikes targeting Israel along with Jordan, Iraq and Gulf countries, which it says are targeting US military assets, resulting in casualties and damage to some civilian infrastructure and affecting global markets and aviation.