Israeli Prime Minister Benjamin Netanyahu says the Gaza war has come at a "very heavy price" for his side.
The military says more than a dozen soldiers have been killed in the territory since Friday, bringing the total of the ground assault to 154.
Saturday was one of its deadliest days - but the Israeli PM there was "no choice" but to keep fighting.
Meanwhile, Gaza's Hamas-run health ministry says 70 people were killed in a strike on a refugee camp on Sunday.
