The UN secretary general hopes to maintain 'momentum' in finding a solution, despite the fact that there is currently no UN envoy for the territory of Western Sahara.
Comment: Porous borders, extreme poverty and easily available weaponry help make Burkina Faso an ideal refuge for Islamic State, write Giorgio Cafiero and Daniel Wagner.
A Mauritanian blogger released last week after more than five years in jail has said he only "saw the sun six times" during his incarceration over blasphemy charges.
Countries in the Middle East make up nine out of ten countries facing the highest water stress in the world - meaning taps are close to running dry.
Cheikh Ould Mohamed Ould Mkheitir, 36, had been initially sentenced to death, but was then given a jail term on appeal.
Moroccans joined in with Algeria's Africa Cup celebrations along their closed border, with many seeing the unity as a reminder to politicians on both sides to rethink their border policy.
Medecins Sans Frontieres (MSF) said it was an 'outstanding contradiction' for migrants to be released from the unsafe centre, only for more to be brought in just days later.
Libya's GNA said it cannot protect migrant detention centres from airstrikes such as those witnessed on Tuesday, amid reports hundreds remain vulnerable in the centres after the attack.
Mauritania opposition supporters arrested during clashes in the days following a disputed presidential election have been released following official confirmation of the ruling party's victory.
Mauritania remains on a knife-edge after last week's controversial election.