US President Donald Trump has brushed off criticism of his unpredictable approach in handling the Iran conflict, saying his positions change as facts on the ground shift, Al Jazeera reports.

“It’s good if they’re confused, and the Iranians are confused,” Trump says in an interview on the ‘Pod Force One’ podcast. “But no, it’s just the way I am. It changes. I could leave here, I could give you an answer, and then in 20 minutes go into the Oval Office, and I’ll realise my answer is now incorrect. Facts change and things change quickly.”

The US president has described the war on Iran as a deliberate choice he could not delay.

“I couldn’t, I know, because this is too important. If I did that, they would have had a nuclear weapon. They would have had a nuclear weapon two weeks after the B-2 bomber struck. So if I did that, they would have had a nuclear weapon.”

Trump described the unprovoked attack as a necessary “excursion”.

“They’re not going to have a nuclear weapon, lots of other good things are going to happen.”