The explanatory factors for the transposition of the political-security crises from Libya to the Sahel are endogenous and exogenous. Endogenous factors include the geopolitical configuration predisposed to the transfer of some situations from peoples straddling porous borders; the climate change that characterizes the region; the similarity of political regimes marked by dictatorship, the durability and longevity in power of heads of state, facing a population determined by the need for political alternation, ensure that crises leave one point towards others; the pre-existing secessionist desires in these countries were accentuated following the collapse of the Libyan state coinciding with the independence of South Sudan. Libya’s geopolitical weight previously constituted a point of regional geopolitical balance, the collapse of which took away the beneficiaries of its stability. The underdevelopment which characterizes the collateral victims constituted an endogenous factor because of the poor living conditions which pushed the population to revolt. Corruption and misappropriation of funds cause the State to lose the means enabling it to assume its sovereign missions. The resurgence of terrorist groups and the inability of Sahel states to control the sale and circulation of weapons facilitate the multiplicity of crime in the region. As for exogenous factors, they refer to the ineffectiveness of multinational interventions, external interference through less effective unilateral interventions and Western political control that hamper conflict resolution initiatives in African countries.