The Eurasian Economic Union (EAEU), which includes Russia, Kazakhstan, Belarus, Kyrgyzstan, and Armenia, is a new but substantial regional organization. Significant achievements include a common external customs tariff, a customs union and a common labour market: a well-developed institutional environment has emerged to support and advance these processes, ranging from the Eurasian Economic Commission and the EAEU Court to the Eurasian Development Bank and the Eurasian Fund for Stabilization and Development. This major integration achievement also has several drawbacks and ‘stumbling stones’—some due to Russia’s dominant position, some due to the authoritarian nature of political regimes, and some due to dependence on oil and gas exports.