DEIR AL-BALAH, Gaza Strip (AP) — Israeli ground forces are attacking Hamas militants and infrastructure in northern Gaza. The military said Tuesday that some 800,000 people have fled south since the war began more than three weeks ago, even as warplanes continue to strike all across the sealed-off territory. Buoyed by the first successful rescue of a captive held by Hamas, Prime Minister Benjamin Netanyahu has rejected calls for a cease-fire and again vowed to crush the militant group’s ability to govern Gaza or threaten Israel following its bloody Oct. 7 rampage, which ignited the war. More than half the territory’s 2.3 million Palestinians have fled their homes, as supplies of food, medicine, water and fuel run low.