RAFAH, Gaza Strip — The World Food Program said Tuesday it has paused deliveries of food to isolated northern Gaza because of increasing chaos across the territory, hiking fears of potential starvation. A study by the U.N. children’s agency warned that one in six children in the north are acutely malnourished. Related story: Over 29K Palestinians killed in Israel-Hamas war in Gaza Entry of aid trucks into the besieged territory has sharply declined by more than half the past two weeks, according to U.N. figures. Overwhelmed U.N. and relief workers said intake of trucks and distribution have been crippled by...