Washington: US President Donald Trump has issued one of his strongest warnings yet to Iran, threatening coordinated strikes on key infrastructure, including power plants and bridges, while demanding the immediate reopening of the Strait of Hormuz.

In an expletive-laden post Sunday morning, Trump promised the “crazy bastards” would be “living in Hell” if the waterway isn’t opened to marine traffic.

"Open the Fuckin' Strait, you crazy bastards, or you'll be living in Hell - JUST WATCH!" wrote the president, adding: "Praise be to Allah,” he wrote.

The warning comes amid escalating tensions in the Middle East conflict, with Trump giving Tehran a narrow window to comply or face severe military consequences. Reports indicate he has set a 48-hour deadline, warning that failure to restore safe passage through the critical oil route could trigger large-scale attacks.

Meanwhile, Trump said Sunday an airman rescued from inside Iran after his warplane was downed was "seriously wounded", and added he would give a news conference the next day.

"We have rescued the seriously wounded, and really brave, F-15 Crew Member/Officer, from deep inside the mountains of Iran," Trump said on his Truth Social platform, after previously describing the airman as only "injured" and "safe and sound."

"I will be having a News Conference, with the Military, at the Oval Office, on Monday, at 1:00 P.M. (1700 GMT)," he wrote.