The article examines the reasons for the collapse of the USSR and the signing of the Belovezhskiye Agreements. The thirty-year experience of Eurasian integration in the post-Soviet space is summarized. There is an analysis of role of the Commonwealth of Independent States in the processes of regional economic integration carried out in the last decade of 20th century, in the context of the separation of the post-Soviet republics. It is shown that the members which are states of the Eurasian Economic Union and the Collective Security Treaty Organization fully fulfill the obligations assumed within the framework of the Belovezhskaya Agreements upon secession from the USSR. The article reveals the objective conditionality of the participation of the CIS countries in anti-Russian, pseudo-European projects by a policy of different directions. New economic priorities of Eurasian integration, institutional problems and prospects of the Eurasian Economic Union are investigated.