Presidential election runoff kicks off in Guinea-Bissau

Observers from African Union walk towards polling stations to supervise the electoral process in Bissau, Guinea-Bissau, Dec. 29, 2019. Guinea-Bissau's presidential election runoff kicked off here on Sunday between two former prime ministers, Domingos Simoes Pereira and Umaro Sissoco Embalo. (Xinhua/Xing Jianqiao)