08 April 2017, Maiduguri, Nigeria - Vendors display Vagetable for sale at Gamboru vegetable market Maiduguri metropolitan in Borno, northeast Nigeria, on April 8, 2017. Food and Agriculture Organization Director-General José Graziano da Silva visited Maiduguri, northeast Nigeria, to improve food security and nutrition conditions of most vulnerable IDPs, refugees, returnees and host communities in northeast Nigeria