A fire has broken out at Viva Energy's Geelong Oil Refinery -  one of Australia's two remaining oil refineries.

Firefighters spent the night battling the fire, and questions are now being asked around the impact on domestic fuel supply.

This comes as senior federal government ministers travel to Asian countries, as they seek assurances on fuel reserves.

Trade Minister Don Farrell joins the program before he heads to Singapore.

Then, key Pakistani mediators are in the Iranian capital trying to revive peace talks between the U-S and Iran.

US and Iran blockades in the Strait of Hormuz remain, but President Donald Trump remains optimistic a deal can be reached.

And the Coalition says it has a plan to restore "integrity and confidence" to Australia's migration system - but experts say there are significant flaws in their policy.

Recap the morning's news, politics and global affairs with the Breakfast Wrap.