GENEVA The United Nations cautioned on Oct. 17 that it would take time to reverse the famine in the Gaza Strip, saying all crossings needed to be opened to "flood Gaza with food.” The U.N.'s World Food Programmed said it had been able to move close to 3,000 tons of food supplies into the war-shattered Palestinian territory since the U.S.-brokered ceasefire between Israel and Hamas took hold. "It's going to take some time to scale back the famine" declared by the U.N. in late August, WFP