Intergovernmental organization
An intergovernmental organization (IGO) is an organization composed primarily of sovereign states (referred to as "member states"), or of other organizations through formal treaties for handling/serving common interests and governed by international laws. IGOs are established by a treaty that acts as a charter creating the group. Treaties are formed when lawful representatives (governments) of several states go through a ratification process, providing the IGO with an international legal personality. Intergovernmental organizations are an important aspect of public international law. Intergovernmental organizations in a legal sense should be distinguished from simple groupings or coalitions of states, such  as the G7 or the Quartet. Such groups or associations have not been founded by a constituent document and exist only as task groups. Intergovernmental organizations must also be distinguished from treaties. Many treaties (such as the North American Free Trade Agreement, or the General Agreement on Tariffs and Trade before the establishment of the World Trade Organization) do not establish an organization and instead rely purely on the parties for their administration becoming legally recognized as an "ad hoc" commission. Other treaties have established an administrative apparatus which was not deemed to have been granted international legal personality. The  broader concept wherein relations among three or more states are organized according to certain principles they hold in common is multilateralism. Types and purpose. Intergovernmental organizations differ in function, membership, and membership criteria. They have various goals and scopes, often outlined in the treaty or charter. Some IGOs developed to fulfill a need for a neutral forum for debate or negotiation to resolve disputes. Others developed to carry out mutual interests with unified aims to preserve peace through conflict resolution and better international relations, promote international cooperation on matters such as environmental protection, to promote human rights, to promote social  development (education, health care), to render humanitarian aid, and to economic development. Some are more general in scope (the United Nations) while others may have subject-specific missions (such as INTERPOL or the International Telecommunication Union and other standards organizations). Common types include: Historicity and Evolution. The origin of IGOs can be traced way back from the Congress of Vienna of 1814–1815, which was an international diplomatic conference to reconstitute the European political order after the downfall of the French Emperor Napoleon. States then became the main decision makers who preferred to maintain their sovereignty as of 1648 at the  West Phalian treaty that closed the 30 years’ war in Europe. But in the scholarly world, the origin of IGOs is most reflected at the birth of the League of Nations (LoN), which was the first worldwide intergovernmental organization founded on 10 January 1920 with a principal mission of maintaining world peace after World War I. The League of Nations was succeeded by the United Nations (UN) in 1945, which was also predicted on the notion that continued cooperation among states would ensure global security. This was signed on 26 June 1945, in San Francisco, at the conclusion of the  United Nations Conference on International Organization, and came into force on 24 October 1945. () Currently, the UN is the main IGO with its arms such as the United Nations Security Council (UNSC), the General Assembly (UNGA), the International Court of Justice (ICJ), the Secretariat (UNSA), the Trusteeship Council (UNTC) and the Economic and Social Council (ECOSOC). Other IGOs include the Multi- National Companies (MNCs) like SHELL, Regional and Continental bodies/ blocks like European Union (EU), African Union (AU), East African Community (EAC) among others. Expansion and growth. Held and McGrew counted thousands of IGOs worldwide in 2002 and this number  continues to rise. This may be attributed to globalization, which increases and encourages the co-operation among and within states and which has also provided easier means for IGO growth as a result of increased international relations. This is seen economically, politically, militarily, as well as on the domestic level. Economically, IGOs gain material and non-material resources for economic prosperity. IGOs also provide more political stability within the state and among differing states. Military alliances are also formed by establishing common standards in order to ensure security of the members to ward off outside threats. Lastly, the formation has  encouraged autocratic states to develop into democracies in order to form an effective and internal government. According to a different estimate, the number of IGOs in the world has increased from less than 100 in 1949 to about 350 in 2000. Participation and involvement. There are several different reasons a state may choose membership in an intergovernmental organization. But there are also reasons membership may be rejected. Reasons for participation: Reasons for rejecting membership: Privileges and immunities. Intergovernmental organizations are provided with privileges and immunities that are intended to ensure their independent and effective functioning. They are specified in the  treaties that give rise to the organization (such as the Convention on the Privileges and Immunities of the United Nations and the Agreement on the Privileges and Immunities of the International Criminal Court), which are normally supplemented by further multinational agreements and national regulations (for example the "International Organizations Immunities Act" in the United States). The organizations are thereby immune from the jurisdiction of national courts. Rather than by national jurisdiction, legal accountability is intended to be ensured by legal mechanisms that are internal to the intergovernmental organization itself and access to administrative tribunals. In the course of many court  cases where private parties tried to pursue claims against international organizations, there has been a gradual realization that alternative means of dispute settlement are required as states have fundamental human rights obligations to provide plaintiffs with access to court in view of their right to a fair trial. Otherwise, the organizations’ immunities may be put in question in national and international courts. Some organizations hold proceedings before tribunals relating to their organization to be confidential, and in some instances have threatened disciplinary action should an employee disclose any of the relevant information. Such confidentiality has been criticized as a lack  of transparency. The immunities also extend to employment law. In this regard, immunity from national jurisdiction necessitates that reasonable alternative means are available to effectively protect employees’ rights; in this context, a first instance Dutch court considered an estimated duration of proceedings before the Administrative Tribunal of the International Labour Organization of 15 years to be too long. Strengths and weaknesses. These are some of the strengths and weaknesses of IGOs. Strengths: Weaknesses: They can be deemed unfair as countries with a higher percentage voting power have the right to veto any decision that is not in their favor, leaving  the smaller countries powerless.