Trade Performance and Regional Integration of the CIS Countries is part of the World Bank Working Paper series. These papers are published to communicate the results of the Bank's ongoing research and to stimulate public discussion. The CIS free trade area is, on balance, a beneficial, trade facilitating bloc. However, the potential benefits of CIS trade integration remain badly underutilized. Based on standard econometric models, the study provides a detailed quantitative analysis of the trends and the configuration of trade of the CIS countries.