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The Americans are among 37 people sentenced to death last September by a military court.
Our correspondent enters Khartoum just days after Sudan's army recaptured it from the Rapid Support Forces after a six-month offensive.
In the city of Dutse, thousands filled the streets to celebrate a centuries-old festival.
A total of 95 people are charged with promoting "public violence" and for "breaches of peace".
Her family had not seen her for six months before she was found with a man claiming to be her husband.
Hakainde Hichilema says some are dozing off because of "indulgence" and a lack of self-control.
Government sources have indicated that the agreement will not need further approval from the US.
An undercover BBC investigation exposes how rogue agents are exploiting a UK visa scheme.
With UK school fees rising, Nigeria's elite can now choose to give their offspring a British education at home.
Ukrainian helicopter crew hailed after coming under fire during an evacuation of a military base in South Sudan.
A selection of the week's best photos from across the African continent and beyond.
Fighting in a mineral-rich region of central Africa proves a quandary for Chinese business interests.
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