Iran warned of a “painful response” after President Donald Trump threatened new U.S. strikes and suggested Washington could move to control key Iranian oil infrastructure.

The latest Trump Iran threat added pressure to an already volatile Gulf crisis on Thursday, June 11, 2026, as Tehran also claimed the Strait of Hormuz would be closed until further notice.

Trump threatens new strikes on Iran

Trump said in a Truth Social post that the United States would hit Iran “very hard” and referred to Iran’s navy, air force, radar, anti-aircraft systems and other defense capabilities.

He also said that “at some point in the not too distant future,” the United States would take Kharg Island and other oil infrastructure points and assume control of Iran’s oil and gas markets.

Kharg Island is a major hub in Iran’s oil export system, making the threat significant for global energy markets, Gulf security and shipping routes.

Iran warns of painful response

Ebrahim Azizi, chairman of the National Security Committee in Iran’s Parliament, criticized Trump’s remarks and warned that the U.S. president would receive “a stronger and more painful response” if Washington made what he described as a miscalculated move.

Azizi said Trump had “no real power cards” and argued that the confrontation had brought heavy costs without clear benefits for Americans.

Strait of Hormuz claim raises oil market concern

Iran’s Persian Gulf Strait Authority said on X that the Strait of Hormuz would be closed until further notice because of tensions it attributed to American forces in the region and an announcement by Iranian armed forces.

The authority said applicants who had already received transit permits should remain patient and wait for further instructions.

The Strait of Hormuz is one of the world’s most important energy shipping routes. Any enforced restriction could affect oil and gas flows through the Gulf, raise shipping risks and increase pressure on global energy markets.

For U.S. readers, the key issue is whether the exchange remains a war of public threats or turns into a wider military and energy crisis. Trump’s warning, Iran’s response and the Strait of Hormuz claim together increase the risk of further escalation in a region central to global oil supply.