What can stop Gaza's collective punishment?

Israel's siege and destruction of Gaza is a 'humanitarian catastrophe' for its 2.3 million people. Those are the United Nations' words, as it warns that cutting off water, food, fuel and electricity is a war crime. So what can stop such collective punishment?  Join Host Tom McRae  Guests:  Mansour Shouman - Resident of Gaza. Bushra Khalidi - Policy lead in the Occupied Palestinian Territory and Israel for OXFAM. Riham Jafari - Communications and advocacy coordinator, Occupied Palestinian Territory, Action Aid.