Yemen crisis: Three stats that reveal the scale of world's worst humanitarian crisis

The U.N.'s humanitarian chief warned this week that 14 million people in Yemen — or half of the country's population — need aid to survive amid fears of an "imminent and great big famine." These stats help shed light on the tragedy. https://t.co/JzxYB87uy3

— NBC News (@NBCNews) October 28, 2018