Obama has tried to turn the U.S.-Africa relationship from dependency to partnership.
Kerry visited the country's top Islamic leader and met with northern governors during his visit.
Several people were killed after a student allegedly blasphemed against Islam.
Amina Ali Nkeki escaped in May and fathered a child by a suspected Boko Haram member.
The militant group's latest video demanded the release of its fighters in exchange for the girls.
One of the Nigerian schoolgirls is used to plead with the federal government to release Boko Haram militants.
Economics, not ideology, is the driving force behind Nigeria's Islamist insurgency.
Community groups are demanding better employment opportunities in the oil-rich region.
The Turkish ambassador says that 17 schools in Nigeria are linked to Fethullah Gulen.
Wakaa! The Musical satirizes Nigerian politics and drew in sell-out crowds in London.
Nigeria's oil production has been hammered by militant attacks.
The West African country has been hit hard by falling oil prices and low production.
The president said his government is talking to militants, but the Niger Delta Avengers disagree.
A quarter of a million children are suffering from malnutrition in the militants' wake, UNICEF said.
Kachikwu just got demoted but is still one of Nigeria's key figures.
Nigeria has started cleaning up oil-soaked Ogoniland, but there are some key flaws in the plan.
"I fail to appreciate the economic explanation," said the Nigerian president.
The militant group, based in Nigeria's oil hub, have previously threatened to secede from the country.
The Nigerian president said he hoped bilateral relations would flourish "despite the outcome of the referendum."