Israeli forces advanced further on Sunday into the Shejaiya neighbourhood of northern Gaza and also pushed deeper into western and central Rafah in the south, killing at least six Palestinians and destroying several homes, residents said. Israeli tanks, which moved back into Shejaiya four days ago, fired shells towards several houses, leaving families trapped inside and unable to leave, the residents said. Speaking at the start of the weekly cabinet meeting on Sunday, Israeli Prime Minister Benjamin Netanyahu repeated his position that there was no substitute for achieving victory in the war a…