India, April 7 -- US President Donald Trump has issued one of his most severe warnings yet to Iran, cautioning that an entire civilisation could face destruction as a key deadline approaches.

In a post on Truth Social, Trump stated that a catastrophic outcome could unfold by the end of the day, although he added that such a scenario might still be avoided.

He described the moment as potentially one of the most significant in global history, while leaving room for a last-minute shift in developments.

Trump also suggested that regime change in Iran could open the door for a different political trajectory, though he did not confirm any specific course of action.

The warning comes amid escalating tensions over the Strait of Hormuz, a cruc...