GAZA CITY, Gaza Strip — Mohammed Ibrahim wants to run and play soccer again, but the 14-year-old has had three surgeries since an accident this summer when he was run over as he tried to grab food off an aid truck for his starving family. A nurse at this Gaza City clinic changes the gauze on his right leg. He winces in pain. "Focus with us and calm your mind," she tells him. "You will be just fine." "It hurts," the boy whimpers. Unable to fight back tears, he bursts out: "I can't! I can't!" This clinic is run by...