The price of crude oil has spiked, again. And US President Donald Trump has posted on social media, saying the US will charge a 20 per cent fee on cargo travelling through the contested Strait of Hormuz.

But why is the price of oil still not as high as many would expect? And what economic costs remain behind a ceasefire that appears to have effectively collapsed?

Meanwhile, we continue the conversation on economic productivity, looking at another cornerstone of the Australian economy: property.

So how does the value of Australian housing compare to the size of the economy? And what has the Australian property market done to productivity? 

Daniel Ziffer and ABC Chief Business Correspondent Ian Verrender break it all down on ABC Business Daily.

Check out Ian's recent articles on the global energy crisis and the effect of property on productivity

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