What can the UN secretary general hope to achieve in Gaza?

'A region reeling in pain and one step from the precipice'. Those are the words of UN chief Antonio Guterres, during an urgent diplomatic mission to help Gaza. Two-point-three million Palestinians are living under an Israeli siege and constant bombing. So what can Guterres hope to achieve?    Join Host James Bays Guests:  Mansour Shouman - Human rights advocate and a resident of Gaza.  Francesca Albanese - United Nations Special Rapporteur on the Occupied Palestinian Territory.  Donatella Rovera - Senior Crisis Response Adviser, Amnesty International.