Trump again: 'Iran war could end very soon, probably right after elections'

US President Donald Trump has again said that the war with Iran could end soon, "probably right after the elections", while questioning who in Tehran Washington could negotiate with.

Speaking at a rally in Mobile, Alabama, Trump said: "I don't know who the hell to deal with. There's nobody to deal with. Nobody wants to be president. I say, who do I speak to in Iran? … Knock knock, nobody home."

Trump also reiterated that Iran "will never have a nuclear weapon". He added that previous US presidents had failed to act.

"This should have been done by other presidents for years … We always have to do the dirty work," he said.

Trump once again painted a picture of an Iran left defenceless and in deep economic crisis: "They have no navy, they have no air force, they have no radar, they have no anti-aircraft [defence systems]," he said, adding: "Their economy is down the tubes … They have about 310 percent inflation."