Despite heavy Israeli bombardment, hundreds of thousands of Palestinians are still living in northern Gaza without basic supplies like food. The United Nations says it has identified acute malnutrition in 16.2% of children there as hunger continues to spread throughout the strip. Meanwhile, humanitarian groups have faced a number of challenges in getting aid into Gaza and are finding even more difficulty delivering it. In this episode, CNN’s Katie Polglase investigates how a UN aid convoy came under Israeli fire despite traveling on an approved route. 
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