At least 81 Palestinians have been killed in Gaza by Israeli attacks and forced starvation since dawn as the Israeli military said it had begun the first stages of its planned assault to seize the enclave's largest urban centre, Gaza City, where close to a million people remain in perilous conditions. Three other Palestinians starved to death in the besieged enclave on Wednesday, bringing the total count of hunger-related deaths to 269, including 112 children.