Accountability for the murder of dissident Saudi journalist Jamal Khashoggi will be difficult to prove, but it is nothing less than the international community owes him, the UN-appointed independent rights expert involved in investigating his death has said.

In an interview with UN News’s Daniel Johnson, Agnès Callamard, Special Rapporteur on extrajudicial, summary, or arbitrary executions, suggests which judicial tools might help to make this happen.