The Israeli military says it's expanding its ground operation into "all areas" of the Gaza Strip - following the resumption of fighting on Friday.
It has reiterated its call for people living in the south of Gaza to leave urgently, as it widens its offensive.
Mark Regev, a senior adviser to Israel's prime minister, insists they're focusing strikes on militants.
"We don't want to see a single innocence civilian, especially not children, caught up in the crossfire between us and the Hamas terrorists. For us, it is also a moral imperative, as it is a strategic imperative. They both go hand in hand. What our challenges is, is we face a brutal and horrific enemy Hamas".