Résumé:
Banks play an important role in the economies of the countries, the existence of a reliable banking
system remains an urgent and vital because of the importance of the role it plays in the areas of
financial intermediation, the fact that funding is the cornerstone of any developmental process. The
revitalization of the international trade and sustainable development has always been at the top of
the priorities of any country and Algeria in particular. Algeria is aware that the importance of
internal and external trade financing lies in the service of development projects and services and
infrastructure; to achieve a sustainable development. Underlines the importance of commercial
banks in the financing of foreign trade in the opening documentary credits to finance import and
export operations highlighted this developmental role, investment and stimulate economic
development and sustainable development through a variety of tools and banking products
