Regional organization

Regional organizations (ROs) are, in a sense, international organizations (IOs), as they incorporate international membership and encompass geopolitical entities that operationally transcend a single nation state.

However, their membership is characterized by boundaries and demarcations characteristic to a defined and unique geography, such as continents, or geopolitics, such as economic blocs.

They have been established to foster cooperation and political and economic integration or dialogue among states or entities within a restrictive geographical or geopolitical boundary.

They both reflect common patterns of development and history that have been fostered since the end of World War II as well as the fragmentation inherent in globalization, which is why their institutional characteristics vary from loose cooperation to formal regional integration.

[1] Most ROs tend to work alongside well-established multilateral organizations such as the United Nations.

Organizations grouping almost all the countries in their respective continents. Note that Turkey is a member of both the Council of Europe (CoE) and the Asia Cooperation Dialogue (ACD). See also: international organization .
Several smaller regional organizations with non-overlapping memberships.
Several non-overlapping large alliances. Pastel colors indicate observer/associate or candidate countries.