A malnourished Yemeni child receives treatment at a hospital in the port city of Hodeidah on Tuesday. Ravaged by cholera, famine and war, the country has been declared the world's worst humanitarian crisis — and there is little indication the dire situation there is improving.
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Brazilian members of the United Nations Stabilization Mission In Haiti stand by a shelter in Les Cayes ahead of a visit by U.N. Secretary-General Ban Ki-moon on October 15, 2016.
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U.N. Secretary-General Ban Ki-moon, pictured during a 2014 visit to Haiti to inaugurate a sanitation campaign. On Thursday, he issued an apology that Haitians have been demanding for six years.
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