Israeli bombardment of Gaza City is pushing more Palestinians out of their homes, residents have said.
Gaza health authorities said Israeli fire had killed at least 28 people on Thursday, most of them in Gaza City, where Israeli forces have advanced through the outer suburbs and are now only a few miles from the centre.
Israel launched its latest offensive in August with Prime Minister Benjamin Netanyahu saying it was designed to defeat Hamas militants in the city, but the campaign has prompted international criticism because of the dire humanitarian crisis in the area.
It has also provoked unusual concerns within Israel, including accounts of tension over strategy between some military commanders and political leaders.
A number of Israelis took part in nationwide demonstrati