ABSTRACT: Poverty continues to overwhelm a large proportion of the population despite some improvements in the standard of living in some parts of the world. In an extreme situation, the fight against poverty begins with humanitarian actions to save lives and repair human damage. In another aspect, development policies are adopted to trigger economic and social dynamism. These are supposed to provide mechanisms that must be sustainable to support continuous development. It turns out that between humanitarian actions in a context of extreme poverty and development policies in the strategic sense, there are encroachments that create the risk of distortion up to the reciprocal neutralization of these two notions. . This paper will try to make a comparative and reciprocal analysis of these two actions in order to detect their differences, their complementarities and the interferences in order to draw lessons for a better effectiveness for the population concerned. The approach combined a legal vision in the sense of human rights and an economic vision in the sense of basic needs. And the economic approach with the use of the Keynesian-cross has clearly demonstrated the stakes. These steps have revealed that humanitarian actions and development policies have their place in specific contexts respectively, but best reciprocal combinations and rationalizations are necessary and beneficial. for the population. It remains to be seen how to find the best contextual and temporal connections so that humanitarian actions can serve as solid bases for human rights and trigger sustainable and sustainable development
KEY WORDS: humanitarian actions – development policy – complementarities – interference –Keynesiancross.