Barefoot children played on chilly sand as Gaza’s thousands of displaced people prepared threadbare tents for another round of winter rain. Israel Prime Minister Benjamin Netanyahu is expected to visit Washington in the coming days as negotiators and others discuss the second stage of the ceasefire that took effect on Oct. 10. Though the agreement has mostly held, its progress has slowed. Meanwhile, Israel’s defense minister on Saturday said a military operation continued in a town in the Israeli-occupied West Bank a day after police said a Palestinian killed two people in northern Israel.