The Flag of the CIS
Following the fall of the Soviet Union, the newly independent states decided to still act together, and needed a new forum to do so. So, the Commonwealth of Independent States was formed. The CIS is a loose federation that is largly symbolic in nature.
However, it does have some supra-national responsibilities.Such as coordinating powers in areas of trade, and finance, lawmaking, and security. It act to coordinate cross border crime, as well as promoting the development of democracy in all the member states.