GAZA CITY Around 200,000 Palestinians have fled Gaza City in recent weeks as the Israeli military prepares a major offensive in the enclave’s main urban hub, the Israeli Defense Forces said on Sept. 11. Before the evacuation order, an estimated 1 million Palestinians — nearly half of Gaza’s population — were living in the northern Gaza area surrounding Gaza City. On Sept. 9, the IDF ordered all residents to evacuate immediately to a so-called “humanitarian zone” in the south. World Health