Challenges proving war crimes

The Australian Federal Police today arrested war hero Ben Roberts-Smith over the war-crimes murders of five unarmed Afghan civilians and prisoners during the Afghan War.
The arrest comes after a quiet, five-year-long investigation into Roberts-Smith, which reportedly involved tapped phones, listening devices, and raids by secretive Office of the Special Investigator detectives.
Today, investigative reporters Nick McKenzie and Michael Bachelard reveal how this arrest unfolded, and what happens next.

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