79-year-old King Salman has taken the Saudi throne, promising security and stability. But what do his past and his first acts as king tell us about how the country might change under his rule and beyond? Our Inquiry hears from a newspaper editor and an ex-spy who have both met him and from Saudis who hope for change. Presenter: Helena Merriman Photo: New Saudi King Salman attends a ceremony following the death of the late Saudi King at the Diwan royal palace in Riyadh (Credit: Reuters)