New Delhi, April 7 -- US President Donald Trump - whose 48-hour ultimatum to Iran to open the Strait of Hormuz expires tonight - may extend the deadline if conditions are deemed favourable, reports suggest.

"If the president sees a deal is coming together, he'll probably hold off. But only he and he alone makes that decision," a senior Trump administration official was quoted as saying by Axios.

If the deadline is extended, it would mark the fifth such extension given by the US President.

However, there's not much optimism: a defence official said they were "skeptical" there would be any extension this time around, reported the outlet.

The Wall Street Journal too reported that negotiators were "pessimistic" about the chances of Tehran...