Civilizational threats considered from ecological, economic and social aspects are the rudimentary reference point for theoretical studies on sustainable development. Manifold concepts and interpretations of the risk issue were converted into proposals for solutions that are primarily reflected in strategic documents on sustainable development and programs related to security. Mutual interactions, or even interpenetration of some threats on other may affect the efficiency of implementing preventive and corrective programs. Consequently, scientists point to the need of adopting more systemic solutions whose implementation requires a specific policy and properly selected tools of its realization. The key initiator and promoter of sustainable development is the United Nations. The objectives and directions of activities indicated by that organization and including prevention of such threats as poverty, hunger and environmental degradation, were proposed in the United Nations Millennium Declaration. The 15 years of implementing the document’s resolutions concluded in the preparation of a report summarizing the project, i.e. The Millennium Development Goals Report 2015. The present paper outlines the issue of threats in the context of international striving for security and reduction of global, primarily social, problems. It provides an evaluation of the ways in which the UN policy is conducted as well as practical realization of this policy, at the example of the Millennium Declaration. The conducted analysis allowed to define the future prospects for the implementation of this policy, especially with respect to preventing social threats.