Washington's top diplomat says they attacked Iran pre-emptively, knowing Israel would strike.
Marco Rubio's comments contrast with those of Donald Trump's on the weekend, where the US president said Iran rejected every opportunity to renounce their nuclear ambitions, and the US couldn't take it any more.
But Mr Rubio suggests, it was not America's initiative, and that Washington knew an Israeli action would precipitate an attack against American forces.
Israel has meanwhile attacked the headquarters of Iran's state broadcaster in Tehran.
The Reserve Bank is watching the impact the conflict in the Middle East is having on inflation in Australia.
Iran's military warns it'll set fire to any ships that attempt to pass through the strait of Hormuz, threatening to choke a fifth of global oil flows and push petrol prices up.
New surcharges are also being added to costs for goods travelling through the Middle East, as the conflict expands.
RBA governor Michelle Bullock says it's too early to tell how inflation will be affected while the tensions remain.
The Workplace Gender Equality Agency says an improvement in Australia's gender pay gap is reassuring, but still not enough.
The annual salary data shows a gap of 11.2 per cent between men and women in the same workplaces, down 0.9 per cent from last year.
But it also shows that employers with the largest gender pay gaps are often in large industries dominated by men.