The presence of Boko Haram in the Lake Chad Basin is a threat of peace, stability and security. The modus operandi of this terrorist movement is in the register of terror and violent islamism. That is what constitutes à threat in this region. This paper aims to analyze the relevance and impact of this new threat on peace and security in the Lake Chad Basin. The work wants to analyze the circumstances of the emergence of Boko Haram and the sources of founding this terrorist group. The reflection, which is part of a historical-analytical perspective, seeks to solve the problem of security in this region. It's a question of presenting and analyzing in a dynamic perspective, the different strategies used to respond to the insecurity generated by the actions and the threat of Boko Haram in this area.

Keywords: Terrorist movement, Boko Haram, new threat, security, Lake Chad Basin