gaza’s 2.3 million civilians faced a deepening struggle for food, water and safety on sunday and braced for a looming invasion a week after hamas militants launched a deadly assault on israel. while hundreds of thousands sought to heed israel’s order to evacuate the north, others huddled at hospitals there. israeli forces, supported by a growing deployment of us warships in the region, positioned themselves along gaza’s border and drilled for what israel said would be a broad campaign to dismantle the mi