A mother feeds her malnourished child at clinic run by Médecins Sans Frontières in Maiduguri.
A mother holds her malnourished baby at a health facility in Maiduguri, north-east Nigeria, in September. The UN has warned tens of thousands of children may starve to death in the region within months.
People at Minawao camp, Cameroon, during an April 2016 visit from Samantha Power, outgoing US ambassador to the UN, to highlight the threat of Boko Haram in the Lake Chad region.