This Friday, March 19, was the last day of the campaign before the Congolese-Brazzaville presidential election. This Sunday, 2.5 million voters will be called to the polls. The defense and security forces have already voted early on Wednesday. The outgoing president, Denis Sassou-Nguesso, 77 years old and already 36 years cumulative at the head of the country, is fighting for a new mandate. In front…