Before revision: 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.Timothy M. R. Kukula, 2021, School of Social Sciences, Nkumba University- Uganda IGOs are established by a treaty that acts as a charter creating the group.
After revision: or intergovernmental organisation (see spelling differences), also known as an international institution,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.Timothy M. R. Kukula, 2021, School of Social Sciences, Nkumba University- Uganda IGOs are established by a treaty that acts as a charter creating the group.