The United Nations involvement in the Congo crisis can be viewed in various perspectives. It is a significant example of the UN's peace-keeping activities and a formidable test of Secretary-General Dag Hammarskjùld's concept of preventive diplomacy. From the viewpoint of legal analysis, it shows the flexibility of the Charter. In terms of the UN's institutions, it demonstrates both the potentialities and the perils of the development of the executive capacity of the SecretaryGeneral. In addition, in the Civilian Operations of the United Nations Operation in the Congo (abbreviated as ONUC, the initials of Organisation des Nations Unies au Congo), it has another, less widely known facet Alongside efforts to contain, ease, and ultimately eliminate the political-military crisis in the Congo, the United Nations has undertaken through ONUC's Civilian Operations emergency and longer-term functions which can most appropriately be called “statepreserving” and “state-building.”