Sudanese opposition calls for nationwide boycott of April polls
Opposition parties cite deteriorating political and press freedoms, worsening insurgencies as boycott reasons
South Sudan's warring sides sign another ceasefire deal
The two sides need a transitional government in place by July, when Salva Kiir's presidential term runs out
ANALYSIS-In pursuit of next-generation Ebola stockpile vaccines
Experimental Ebola vaccines now moving into large clinical trials target Zaire virus strain, but next outbreak may be different
South Sudan president and rebel leader sign "power sharing" deal
Leaders edge closer to final deal to end 15-month conflict that has ravaged world's newest country
Sudan rebels free Bulgarian aid workers -ministry
The WFP workers were held by rebels when their helicopter made an emergency landing in the strife-torn South Kordofan region
FACTBOX-Under-reported conflicts in 2015
Several under-reported conflicts are ruining the lives of millions in some 30 countries
Under-reported conflicts seen affecting millions in 2015
Millions at risk because conflicts affecting them are barely reported so pressure to end them is lacking
For green, comfortable homes, Mali turns to mud
Nubian-style vaulted roof mud homes are surging in popularity in the Sahel