With a renewed cease-fire push in the eight-month-old Gaza war stalled, Israel bombarded central and southern areas again on Friday, killing at least 28 Palestinians, and tank forces advanced to the western edges of Rafah.

U.S.-backed Qatari and Egyptian mediators have tried again this week to reconcile clashing demands preventing a halt to the hostilities, a release of Israeli hostages and Palestinians jailed in Israel, and an unrestricted flow of aid into Gaza to alleviate a humanitarian disaster. But sources close to the talks said there were still no signs of a breakthrough.

A month after rumbling into Rafah in what Israel said was an assault to wipe out Hamas' last intact combat units, tank-led forces have advanced to the southwest fringes of the city that skirts the Gaza Strip's border with Egypt, residents said.