Interviews with local authorities highlight the strong strategic dimension of decentralized cooperation programs, with high expectations in terms of economic spin-offs.Cooperative action strives to promote democracy and stakeholder participation, and to bring together environmental protection, the creation of economic activities and sustainable income, the strengthening of rights, and respect for cultural diversity and freedoms.It is important to capitalize on successes and failures in this field, to benchmark, and thus to cross several dynamics, whose convergence and synergy of actions could be ensured by decentralized cooperation.Local authorities set up initiatives to give their own impetus to political, economic and social development. Decentralized cooperation contributes to the development and strengthening of local public services.