July 14 (UPI) -- Muhammadu Buhari , the former president of Nigeria who led the country as both a military ruler after a coup and later as the elected president, has died at the age of 82, his family said. Buhari died Sunday afternoon at a London medical clinic, his family said in a statement through the former president's press secretary, Garba Shehu. "Muhammadu Buhari was the rarest of individuals to grace political life anywhere in the world: an incorruptible servant of the people," Shehu