When Rami Mahmoud left his family’s home to buy food, his wife, Elham Maged, stayed behind to pray. When he made his way back through the narrow, tightly packed nearby streets of northern Gaza’s Jabalya Refugee Camp, he returned to a scene of complete chaos. An Israeli airstrike had smashed into the center of the densely populated community, tearing a deep crater into its heart. Their apartment had vanished.