File — A man stands in a sun-baked dried up watering hole in Mana Pools National Park, Zimbabwe. Sunday, Oct. 27, 2019, as the United Nations' food agency says months of drought in southern Africa, triggered by the El Nino weather phenomenon, has had a devastating impact on more than 27 million people and caused the region's worst hunger crisis in decades. .(AP Photo/Tsvangirayi Mukwazhi/File)