linguistic:paraphrasing
Commonwealth of Independent States

The Commonwealth of Independent States (CIS) is a loose organisation in which most former Soviet republics participate. A visa-free regime operates among members and a free-trade area is planned. Ukraine is not an official member, but has participated in the organisation. Some members are more integrated than others, for example Russia and Belarus form a Union State. In 2010, Belarus, Russia and Kazakhstan formed a customs union and a single market (Common Economic Space) commenced on 1 January 2012. The Presidents of Belarus, Russia and Kazakhstan established the Eurasian Economic Union with a Eurasian Commission in 2015, subsequently joined by Armenia and Kyrgyzstan. A common currency is also planned, potentially to be named "evraz". Some other countries in the region, such as Moldova are potential members of these organisations.