Two years ago, Gaza’s largest city was sprawling with life. Classrooms brimmed with schoolchildren, markets were full of shoppers and beachside cafes offered respite for those escaping the stresses of a besieged enclave.

Israel’s defense minister is warning Gaza City could be destroyed as the Israeli military ramps up a new offensive against the terrorist group Hamas. Local health officials in Gaza say Israeli strikes on Saturday killed at least 33 civilians.