Over the next week, while you and I are sleeping, members of the Murdoch family will be duking it out in an American courtroom over control of one of the most powerful media empires on the planet. It’s the latest escalation in a civil war that has been building within the family for years.   Today, media writer Calum Jaspan, on why Rupert Murdoch has pitted one of his children, Lachlan, against three of his other kids. And how the outcome of this case will impact all of us.Subscribe to The Age & SMH: https://subscribe.smh.com.au/See omnystudio.com/listener for privacy information.