GAZA CITY, Gaza Strip (AP) — Israeli tanks and warplanes are pummeling the Gaza Strip as U.S. and other diplomats push for a cease-fire with Hamas militants.

Gaza police say an infant boy was among those killed when Israeli fighter jets struck the Jabaliya refugee camp early Thursday.

Palestinian health officials say that 718 Palestinians, mainly civilians, have been killed since the conflict began on July 8. Israel has lost 32 soldiers as it has tried to halt rocket fire from Gaza and destroy cross-border tunnels. Two Israeli civilians and a Thai worker in Israel have also been killed.

U.S. Secretary of State John Kerry, in the region to pursue truce efforts, says some modest progress has been achieved.