Antonio Guterres' visit comes after WFP says it may have to halve food vouchers for Rohingya starting next month.
There are demands for Argentina’s hardline security minister to resign after police shot a photojournalist in the head.
Al Jazeera looks at the bid to bring Formula One back to the African continent for the first time in 32 years.
The charity says the situation has worsened with the arrival of refugees from South Sudan, where thousands are infected.