(U.S. News) – The U.N. humanitarian chief warned Tuesday that conditions in Yemen are “catastrophic” after three years of war, with a record 22.2 million people needing aid and protection, and the U.N. envoy for the country accused the Saudi-backed government and Shiite rebels of prolonging the conflict. The officials painted a dire picture of the Arab world’s most impoverished country plunging into the world’s worst humanitarian crisis and facing massive destruction as a result of what special envoy Ismail Ould Cheikh Ahmed called the parties’ continuing “destructive pattern of zero-sum politics.”

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