Foreign Affairs Minister Marise Payne has used her maiden speech to the United Nations General Assembly in New York to distance Australia from US President Donald Trump's stance on Iran's nuclear program.
Trump withdrew the US from the Iran deal in May and he slammed it again at the UN on Tuesday, calling it "horrible" and "a windfall for Iran's leaders".
Payne said Australia remain committed to the joint comprehensive plan of action signed in 2015 between Iran, former US President Barack Obama's administration, the UK, China, France, Russia, Germany and the European Union.
"Australia supports the joint plan of action on Iran's nuclear program as long as Iran abides but its commitments," Payne told the cavernous General Assembly on Friday.
"It's in our collective interests that controls on Iran's nuclear program remain in place and for this reason the world watches with anticipation the negotiations between the US and North Korea pursuing complete and verifiable and irreversible denuclearisation of the peninsula in accordance with UN resolutions."
Payne also vowed to pursue justice for the victims and their loved ones from the shooting down of Malaysian Airlines Flight 17 over eastern Ukraine in 2014.
The Dutch-led joint investigation team concluded MH17 was shot down by a Russian made Buk missile, killing 298 people including 38 Australians.
Russia has not accepted the findings.
Last year Payne's predecessor, Julie Bishop, represented Australia at the UN General Assembly.
"Many here will remember my predecessor and my friend Julie Bishop's determined and sustained work pursuing accountability for the downing of Malaysia Airlines flight MH17," Payne said.
"Australian remains firmly committed to this objective."