South Sudan's President Salva Kiir has re-appointed his rival Riek Machar as vice president, a decree said.
More than three million, double the population of Botswana, have reportedly fled direct and structural violence in Zimbabwe.
An attacker threw a grenade from a motorcycle in the central neighbourhood of Buyenzi wounding 26 people, witnesses said.
Major powers agreed to a cessation of hostilities in Syria and to provide rapid humanitarian access to besieged towns.
At least 70 people were injured in Egypt when a passenger train derailed and two of its cars overturned, the health ministry said.
A yellow fever outbreak in Angola has killed 37 people since December, the country's national director of health said.
Two civilians and a customs agent were killed after gunmen fired at a customs services office in central Mali.
Two female suicide bombers blew themselves up in a north-east Nigerian refugee camp, killing at least 58 people, officials said.