Israel already controls and has largely destroyed around 75% of Gaza, with most of the population of some 2 million Palestinians now sheltering in Gaza City, the central city of Deir al-Balah and the sprawling displacement camps in the Muwasi area along the coast.

Mr. Netanyahu said in interviews on Thursday that an expanded operation would ensure Israel’s security, drive Hamas from power, enable the return of hostages and pave the way for a temporary administration in Gaza, which he said Israel wanted to eventually hand over to “Arab forces.”