Where can we find hope? 'Nowhere,' says Gaza resident
The UN agency on the ground in Gaza is warning of a \u201chumanitarian catastrophe\u201d if safe corridors aren\u2019t opened, amid Israeli airstrikes and a blockade of fuel, water and electricity. Matt Galloway talks to Isam Hammad, an engineer and regional manager of a medical equipment company, who\u2019s sheltering with his family in Gaza City.