AdvertisementNigeria's New President: From Military Ruler To 'Newborn Democrat'April 01, 2015Ofeibea Quist-ArctonfacebookEmailNigeria's president-elect Muhammadu Buhari speaks to journalists in the capital Abuja on Wednesday. Buhari was a military ruler in the 1980s. With his victory in last weekend's election over President Goodluck Jonathan, he has become the first opposition candidate to defeat a sitting president at the ballot box. (AP)