The flow of aid entering Gaza from Egypt has almost dried up in the past two weeks, and a collapse in security has made it increasingly difficult to distribute the food that does get through, according to U.N. data and officials. Daily figures show a precipitous drop in aid supplies since Feb. 9 reaching Gaza, where the mostly displaced population of 2.3 million is facing crisis levels of hunger. Before the conflict, Gaza relied on 500 trucks with supplies entering daily, and even during intense fighting in January around 200 aid trucks made it through on most days.