Demand for fuel has gone up, but when will petrol prices come back down?

The Federal government says there's no shortage of fuel supply in Australia, amid the ongoing war in Iran.

So why some regional service stations unable to find supply, and why are petrol prices so high? 

Malcolm Roberts is the Chief Executive of the Australian Institute of Petroleum, which represents the big refiners and fuel suppliers. He sat down with David Speers for this week's Insiders On Background.