1. ASEAN - Association of Southeast Asian Nations
2. AU - African union
3. Andean Community

4. CIS - Commonwealth of Independent States

5. CSTO - Collective Security Treaty Organization
6. CoE - Council of Europe
7. EEA - European economic area
8. EU - European union
9. Eurozone
10. G20
11. G7
12. IMF - International Monetary Fund
13. Mercosur
14. NATO - North Atlantic Treaty Organization
15. OECD - Organisation for Economic Co-operation and Development
16. OPEC - Organization of the Petroleum Exporting Countries
17. OSCE - Organization for Security and Co-operation in Europe
18. Schengen area
19. UN - United Nations
20. V4 - Visegrad Four
21. WTO - World Trade Organization

The Commonwealth of Independent States (CIS) is a regional intergovernmental organization in Eastern Europe and Asia. It was formed following the dissolution of the Soviet Union in 1991. It covers an area of 20,368,759 km2 (7,864,422 sq mi) and has an estimated population of 239,796,010. The CIS encourages cooperation in economic, political and military affairs and has certain powers relating to the coordination of trade, finance, lawmaking, and security. It has also promoted cooperation on cross-border crime prevention.

More information:

• Commonwealth of Independent States