Both sides in the civil war in Syria have been accused of deliberately starving citizens, NBC News reported.
Things have gotten desperate in the city of Madaya, one of the communities isolated by the war. Residents have reported eating livestock, pets and even grass.
"Let me be clear: the use of food as a weapon of war is a war crime," United Nations Secretary General Ban Ki-moon said.
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Images of emaciated Madaya residents have promoted an outcry, forcing the Syrian government to allow UNICEF to allow supplies into the city and two other municipalities.
Aid first reached Madaya on Monday and a second convoy entered the city on Thursday. Another is expect to arrive next week, bringing hope to thousands of trapped residents.