Tehran, March 22 -- Iran on Sunday issued a stringent warning to the United States, threatening to target critical energy infrastructure across the region in an "irreversible manner" following US President Donald Trump's 48-hour ultimatum to the Islamic Republic over the Strait of Hormuz.

In a post on X, the speaker of Iran's Parliament, Mohammad Bagher Ghalibaf, stated that any attack on Iranian power plants or infrastructure would prompt retaliatory strikes on regional energy facilities.

"Immediately after the power plants and infrastructure in our country are targeted, the critical infrastructure, energy infrastructure, and oil facilities throughout the region will be considered legitimate targets and will be destroyed in an irrevers...