In 60 seconds: Nigeria's challenges
14 May 2014 Last updated at 10:23 BST
Nigeria is Africa's most populous nation, its biggest economy and largest oil producer - but many of its people live in poverty.
President Goodluck Jonathan's government is plagued by allegations of mismanagement as well as a worsening insurgency by Islamist militants.
Here's a quick look at some of the challenges the country faces, in 60 seconds.
Video produced by Michael Hirst