Gaza shelling by Israel leads to deadliest day of conflict
Gaza has suffered the highest death toll since Israel's offensive began, with at least 87 people reported killed on Sunday - 67 of them in one area.
Palestinian President Mahmoud Abbas described the deaths in the Shejaiya district east of Gaza City as a "massacre".
Israel said that 13 of its soldiers had been killed since Saturday night.
The BBC's Yolande Knell reports from Gaza.
- From the section Middle East