A drought has caused an electricity crisis as Zambia heavily relies on the hydro-powered Kariba Dam.
One of the worst famines in decades could be underway in Sudan, aid workers warn.
Most of the passengers were women and children on their way to celebrate the Muslim festival of Mawlid.
The crackdown was prompted by complaints from parents worried about their children getting addicted.
Aliou Cisse leaves his role as coach of Senegal's national side after a nine-and-a-half-year spell which included winning the 2021 Africa Cup of Nations.
A bail hearing is due in the case of two black women allegedly shot and fed to pigs by a white farmer.
Fresh diplomatic attempts to negotiate a cessation of hostilities have failed to make progress.
The boats sank just 150 metres (492 feet) from a Djibouti beach, authorities say.
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