Israel has killed at least 640 Palestinians in north Gaza since it laid siege to the area 17 days ago, 33 of them since dawn on Monday, medical sources have told Al Jazeera. In Gaza, civilians face unimaginable hardship amid ongoing conflict. Children carry injured siblings on foot, struggling to survive. War-torn streets leave them exhausted, vulnerable, and reliant on strangers for help. In the south, drone strikes target makeshift shelters, killing displaced civilians. Families mourn innocent lives lost in supposed "safe zones." Nowhere in Gaza is safe, especially in the north, where Israeli forces intensify their offensive. Civilians are forced to flee under the threat of death, with hospitals overwhelmed and the war showing no signs of ending. Al Jazeera’s Zein Basravi reports.