AT least 17 Palestinians were killed in a multipronged attack by Israeli forces in Gaza. The Palestinian Islamist militant group Hamas has accused Israel of intensifying attacks in Gaza to undermine efforts by Arab mediators and the United States to reach a ceasefire deal. Israel maintains that its operations aim to eliminate Hamas fighters. In Rafah, a southern border city where Israeli forces have been active since May, five Palestinians were killed in an airstrike on a house. In nearby Khan Younis, a man, his wife, and their two children were killed in another airstrike. In the historic Nuseirat camp…