Earthquake: 'It’s hard to imagine a more complex emergency'

More than 24,000 people are now known to have died after Monday's earthquakes in Turkey and Syria. Millions of people are thought to be homeless in the northern region of Syria which was hit. The BBC's Chief International Correspondent Lyse Doucet is in Turkey and reports from Gaziantep where the search for survivors is continuing. Today's Amol Rajan speaks to Stéphane Dujarric, spokesman for the UN Secretary-General António Guterre, about the scale of the challenge of delivering aid in Syria. He also speaks to Wisam Afisa, a British-Syrian national in Aleppo who is part of the humanitarian effort to help people there. (Image: Aftermath of the earthquake in Aleppo, Credit: Firas Makdesi/ Reuters)