Iran Parliament Speaker Warns of 'Heavier' Responses Following U.S. Strikes on Oil Tankers

Iran's "proportionate responses" to U.S. attacks are over, the country's parliament speaker and top negotiator Mohammad Bagher Ghalibaf said Sunday, while acknowledging the economic impact of the war.

"If they haven't understood by now, they should understand before it's too late that the rules of the game have changed and that from now on, any violation of Iran's interests and security will receive a 'faster, heavier, and more painful' response," Ghalibaf said in a post on Telegram.

But Ghalibaf added that alongside the military conflict, Iran faces severe economic pressures.

"Severe fluctuations in the exchange rate, inflation, unemployment, and market management are fundamental challenges that have put serious pressure on people's livelihoods," Ghalibaf said.

He also stressed the need to rely more on domestic production and use technology to "devise short-term and permanent solutions."

Ghalibaf's remarks come after U.S. forces struck three Iranian crude oil carriers. U.S. Central Command said it permanently disabled one crude oil carrier off the coast of Kharg Island and one near Jask. Another oil tanker was attacked in the Gulf of Oman.

CENTCOM said the attacks were in retaliation for ballistic missiles the Islamic Revolutionary Guard Corps launched toward two Navy warships in the region. According to CENTCOM, a U.S. aircraft carrier and guided-missile destroyer successfully evaded multiple attacks, and no American personnel were harmed.

"Let the message to the IRGC be clear: If you shoot at two of our ships, we will impose an even higher economic cost —taking out three of yours," Admiral Brad Cooper, CENTCOM commander, said in a statement Saturday. "We will not hesitate to defend American forces, and if necessary, destroy Iran's limited and exposed oil fleet."

Defense Sec. Pete Hegseth later wrote in a post on X: "It's simple: if Iran shoots at U.S. ships, we will destroy (and sink) their oil tankers. All they have to do is not shoot at @USNavy."

Iran is the third-largest producer in the Organization of the Petroleum Exporting ‌Countries and exported 90% of its crude via Kharg Island before the war. Flows have been disrupted by a U.S. blockade of Iranian oil exports, which began in mid-April.

The conflict between Iran and the U.S. has effectively shut the Strait of Hormuz, a key waterway for the world's oil supply before the war began on Feb. 28 with American and Israeli airstrikes.