Why was it hard for SAS soldiers to speak out?

After seven years, the Ben Roberts-Smith v Nine newspapers defamation case is finally over, with the high court dismissing his bid for an appeal against a ruling in the federal court that found on the balance of probabilities that he committed war crimes. Guardian Australia senior reporter Ben Doherty talks to Reged Ahmad about what this means for Roberts-Smith, who continues to deny the allegations, and the wider ramifications of the long-running case