The ongoing Israel-Hamas war has entered its third month, leading hundreds and thousands of Palestinians to flee south. A week ago, Israel expanded its ground assault into central and south Gaza, where nearly the territory's entire population of 2.3 million Palestinians are crowded, many of them cut off from humanitarian supplies.

As the war continues to rage, Israel has said the military was rounding up Palestinian men in northern Gaza for interrogation, searching for Hamas terrorists. Furious urban fighting has continued in the north, underscoring Hamas's heavy resistance, and tens of thousands of residents are believed to remain in the area six weeks after troops and tanks rolled in.

(With inputs from agencies)