Long before it hits the petrol pump, disruption in global energy markets starts with a handful of critical choke points. Right now, the Strait of Hormuz — one of the most important shipping lanes in the world — is at the centre of it. So what happens when supply is suddenly constrained? And what does it mean for Australia?

Sean Aylmer talks to Vivek Dhar, Head of Commodities and Sustainability Research at Commonwealth Bank, about the flow of oil and gas around the world, Australia's exposure to the Middle East crisis, and why our LNG and coal give us a lot of leverage.