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Iran threatens escalated response as US-Iran hostilities intensify following ceasefire expiration

Developing1 source · Sep 6, 2026

Iran's parliament speaker warned of a 'faster, heavier, more painful response' to US attacks as renewed fighting continues in the Gulf region.

Iran threatens escalated response as US-Iran hostilities intensify following ceasefire expiration
Image via BBC News

What happened

Iran's Parliament speaker Mohammad Bagher Ghalibaf warned on Sunday of an escalated response to US attacks, stating that Americans must understand 'before it is too late' that the 'rules of the game have changed.' This warning comes nearly a week into renewed fighting between Iran and the US following the formal expiration of a 60-day ceasefire last month. The US has struck Iranian oil tankers, while Iran has retaliated with attacks on US targets across the region including the UAE, Bahrain, Kuwait, and Jordan. Iranian state media claimed Iran's Navy attacked an American remote-controlled vessel near the Strait of Hormuz; the US military denied this claim. US Defense Secretary Pete Hegseth responded with his own threat, stating the US would 'destroy (and sink)' Iranian oil tankers if Iran continues firing on US ships.

Context

The conflict, which according to US President Donald Trump has now lasted six months since beginning in February, centers in part on the Strait of Hormuz—a waterway crucial to global oil and gas supply that has been effectively closed since fighting started. This closure has become a major point of leverage for Iran, which has insisted on maintaining some measure of control over the waterway, while the US has declared it 'open' and is assisting navigation via southern routes. The prolonged hostilities have driven up global energy prices; the average US diesel price hit $5.85 per gallon on Friday, compared to $3.71 a year ago, creating political pressure on the Trump administration ahead of November's midterm elections. Months of negotiations between the US and Iran have yielded no lasting peace, and there are no apparent signs of imminent diplomatic settlement. US Energy Secretary Chris Wright indicated that approximately 9 million barrels per day are currently passing through the strait, with oil also moving through pipelines in the region representing roughly two-thirds or more of pre-conflict flow levels.

What's disputed

Iran's state media claimed the country's Navy attacked an American remote-controlled vessel attempting to enter the Strait of Hormuz; US Central Command stated this report was 'a total lie.'