An Israeli mobile artillery unit fired a shell from southern Israel towards the Gaza Strip, in a position near the Israel-Gaza border, Israel, Saturday, Oct. 28, 2023. Israel on Saturday expanded its ground operation in Gaza with infantry and armored vehicles backed by "massive" strikes from the air and sea, including the bombing of Hamas tunnels, a key target in its campaign to crush the territory’s ruling group after its bloody incursion in Israel three weeks ago. (AP Photo/Ohad Zwigenberg)