Iran nuclear deal welcome: Australia

The federal government says Iran's nuclear deal is a step forward in curbing the country's nuclear weaponry ambitions.

Parliamentary secretary for foreign affairs Steve Ciobo says the landmark deal thrashed out with Tehran to ensure Iran does not obtain a nuclear bomb was a positive outcome built on the work of past two years.

"It settles the issue with respect to Iran's nuclear ambitions to ensure there isn't an opportunity for Iran to develop nuclear weaponry," he told ABC radio on Wednesday.