2015 West African offensive the military's advance. BBC analyst Tomi Oladipo called the victory a major milestone for Nigeria. Boko Haram had held the town since August 2014 when Nigerian troops abandoned the city. The victory came days after Chad President Idriss Deby criticized Nigerian forces for not pulling their weight in the fight against Boko Haram. On election day, Boko Haram militants killed 41 people, including a legislator, in an effort to disrupt voting. After Muhammadu Buhari defeated incumbent president Goodluck Jonathan in the election, the fight against Boko Haram continued. (Jonathan remained in power until May 29.) On April 8, a summit
History of Nigeria firmly" with election fraud and violence advocated by "highly placed individuals." His comments were interpreted by some analysts as a warning to his Vice President and 2007 presidential candidate Atiku Abubakar. In the 2007 general election, Umaru Yar'Adua and Goodluck Jonathan, both of the People's Democratic Party, were elected President and Vice President, respectively. The election was marred by electoral fraud, and denounced by other candidates and international observers. Yar'Adua's presidency was fraught with uncertainty as media reports said he suffered from kidney and heart disease. In November 2009, he fell ill and was flown out of the country to