Thousands died when an earthquake and tsunami struck Palu, Indonesia – but could more lives have been saved? Accusations have been made of a host of failings: alert systems that were out of action, sirens that didn’t sound, a government slow to give emergency help - even people who were too busy filming the disaster to run away. How much truth is there to this? Was everything done to warn people beforehand, and rescue people in the aftermath? We speak to experts on the ground and around the world to find out.

(A man looks for his belongings amid the debris of his destroyed house in Palu, Central Sulawesi, Sept 29 2018.