Two weeks after the ceasefire between Hamas and Israel took effect, aid is flooding into the Gaza Strip, bringing relief to a territory suffering from hunger, mass displacement and devastation following 15 months of war. But Palestinians and aid workers say it's still an uphill battle to ensure the assistance reaches everyone. And looming large is the possibility that fighting will resume if the ceasefire breaks down after the six-week first phase. As part of the ceasefire agreement, Israel said it would allow 600 aid trucks into Gaza each day, a major increase. Israel estimates that at least 4,200 trucks have entered each week since the ceasefire took hold. Humanitarian groups say aid distribution is complicated by destroyed or damaged roads, Israeli inspections and the threat of unexploded bombs. On Saturday, Samir Abu Holi, 68, watched over a food-distribution point in Jabaliya, an area in northern Gaza razed to the ground during multiple Israeli offensives, the most recent of .