Over the past seventy years of United Nations, many people have died in some countries due to government maladministration and lack of basic living conditions. In fact, such governments described as failed states that are not able to meet the basic needs of their inhabitants, they suffer from a severe lack of order and security, and are plagued by crises that jeopardize the security of other countries. United Nations, especially the United Nations Security Council, which has the primary responsibility for maintaining international peace and security in accordance with Charter, cannot be ignorant in the face of such disasters that have undeniable external effects and threaten international peace and security. Therefore, in view of adverse consequences of internal conflicts and evolution of security concept from a state-centered to individual-centered, support for failed states, in particular reconstruction of such countries after the end of conflicts in order to establish legitimacy and political stability and to prevent dissatisfaction which can easily re-arise internal conflicts should be at the center of international community's attention.Therefore, in the present article, we tried to prove the claim of responsibility of international community in the form of United Nations in protecting and rebuilding these countries, to present realistic ways and means to achieve this goal in order to resolve the failure issue which today has become one of the most important challenges and obstacles in the establishment of global security.
