The center of Gaza's second-largest city has seen fighting amid Israel’s widening air and ground offensive in the southern part of the territory that has displaced tens of thousands more Palestinians and worsened dire humanitarian conditions. Distribution of food, water and medicine have been prevented outside a sliver of southern Gaza, and new military evacuation orders are squeezing people into ever-smaller areas.

The United Nations said 1.87 million people — more than 80% of Gaza’s population — have been driven from their homes since the start of the , triggered by the on southern Israel. The U.N. also says that all telecom services have been shut down due to cuts in the main fiber routes. On Wednesday, the United Nations chief urged the U.N. Security Council to use its clout to avert “a humanitarian catastrophe†in Gaza.

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