This paper looks at the developmental consequences of aid flows on the Great Lakes region in Africa. Our main hypothesis is that political considerations and donor coordination problems still play an important role in directing aid and is much less dependent on objective criteria such as the need for aid or good governance. The region of the Great Lakes in Africa is a good illustration of the 'darlings' versus 'orphans' policy of official development assistance (ODA). Departing somewhat from the dominant pessimist stance on the effectiveness of aid in sub-Sahara Africa we will try to show that overall, the costs of exclusion of certain countries from aid are detrimental for human development. In order to avoid this inclusion/exclusion pattern of aid, a regional donor approach should overarch the dominant country by country donor policy. Cet article essaie d'analyser les cons�quences des flux d'aide sur le d�veloppement de trois pays dans la r�gion des Grands Lacs d'Afrique. Les consid�rations politiques et les probl�mes de coordination entre bailleurs de fonds m�nent � un traitement diff�renci� de la part de la communaut� internationale. Ce traitement diff�renci� est une illustration parfaite de la th�se sur l'exclusion/inclusion de certains pays de l'aide internationale. Les cons�quences de cette politique, loin d'�tre le produit d'une rationalit� d'aide bas� sur les besoins d'aide ou les m�rites de gouvernance des pays d�pendants, peuvent avoir des effets n�fastes en termes de d�veloppement.