As the Gaza ceasefire begins, aid workers warn of significant challenges ahead. Despite 630 aid trucks entering Gaza, with 300 heading north, obstacles like hard-to-reach areas, looting, and an Israeli ban on the main UN aid agency persist. The UN has 4,000 trucks ready, but delivery issues remain. Food for 1 million people is available, yet some areas, especially in North Gaza, remain cut off. Winter conditions worsen the situation, and recent Israeli military actions have further restricted aid access.