The organs of UN are:1.The General AssemblyThe General Assembly is the main deliberative organ of the United Nations and includes all its Members. It may discuss any matter arising under the UN Charter and make recommendations to UN Members (except on disputes or situations which are being considered by the Security Council). In the Assembly, each nation, large or small, has one vote and important decisions are taken by a two-thirds majority vote.2.The Security Council-The Security Council has primary responsibility under the Charter for maintaining peace and security. It can be convened at any time, whenever peace is threatened. Member States are obligated to carry out its decisions. When a threat to peace is brought before the Council, it usually first asks the parties to reach agreement by peaceful means. If fighting breaks out, the Council tries to secure a ceasefire. It may then send peacekeeping missions to troubled areas or call for economic sanctions and embargoes to restore peace.3.The Economic and Social Council-The Economic and Social Council (ECOSOC) is the central body for coordinating the economic and social work of the United Nations and the UN family of organizations. It has 54 member nations elected from all regions. As much as 70 per cent of the work of the UN system is devoted to promoting higher standards of living, full employment, and conditions of economic and social progress and development. The Council recommends and directs activities aimed at promoting economic growth of developing countries, supporting human rights and fostering world cooperation to fight poverty and under-development.4.The Trusteeship CouncilThe Trusteeship Council was assigned under the UN Charter to supervise the administration of Trust Territories — former colonies or dependent territories — which were placed under the International Trusteeship System. The system was created at the end of the Second World War to promote the advancement of the inhabitants of those dependent Territories and their progressive development towards self-government or independence.5.The International Court of JusticeThe International Court of Justice (ICJ) is the UN’s main judicial organ. Presiding over the ICJ, or “World Court”, are 15 judges, each from a different nation, elected by the General Assembly and Security Council. The Court settles legal disputes between nations only and not between individuals, in accordance with international law. If a country does not wish to take part in a proceeding it does not have to do so, unless required by special treaty provisions. Once a country accepts the Court's jurisdiction, it must comply with its decision.6.The SecretariatThe Secretariat is made up of an international staff working at UN Headquarters in New York, as well as UN offices in Geneva, Vienna, Nairobi and other locations. It consists of departments and offices with a total staff of around 16,000, drawn from some 175 countries. Including civil staff in peacekeeping missions the total number comprises approximately 30,000 staff. Staff members carry out the substantive and administrative work of the United Nations as directed by the General Assembly, the Security Council and the other organs.