Head of regional bloc SADC says 17 percent of people across region in need of aid amid climate change-fuelled drought.
Zimbabwe, Malawi and Zambia are among the countries in Southern Africa most affected by malnutrition caused by drought.
Crisis brought on by El Nino and climate change will affect more than a million families, President Hakainde Hichilema says.
Blackened corpses scar a landscape where the rains have been more than six weeks late.