Top UN officials have warned that the withdrawal of funding for its main aid agency in Gaza could lead to the "collapse of the humanitarian system". We'll hear how the war has already orphaned many Palestinian children.Also on the programme: we speak to President Putin's main political rival, Boris Nadezhdin; and Haiti's jazz festival returns to the capital in spite of the violent gang wars gripping the city.(Photo: A displaced Palestinian child holds up an empty pot as she waits with others to receive food aid provided by a Palestinian youth group in the Rafah refugee camp, Southern Gaza Strip Credit: Haitham Imad/EPA/EFE/REX/Shutterstock)