Analysts claim the recent Nigerian presidential election was one of the fairest in the country's history. But U.S. Secretary of State Hillary Clinton says it was far from perfect. Following the vote, religious riots between Muslims and Christians broke out in northern Nigeria. Dozens have been killed and thousands have fled their homes. Host Michel Martin discusses the violent turmoil in the country's northern region with Abdullahi Kaura Abubakar, BBC African Service Correspondent.