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
Medical aid group MSF says pulls out of parts of Sudan
Sudanese government denies accusations of blocking MSF's work
MSF in Sudan to pull out of war-torn Blue Nile, parts of Darfur
Denial of access to Blue Nile state and other obstacles imposed by authorities made its work impossible, charity says
Sudanese rebels take six Bulgarians captive - Bulgarian foreign ministry
The Bulgarians were working for the U.N.'s World Food Programme (WFP), Bulgarian foreign ministry says