The article examines the ideological, geopolitical and international legal factors of Eurasian cooperation and reasons for the low pace of its development. As a leading barrier to the deepening of trade and economic integration of the post-Soviet countries, the desire of the post-Soviet states to prevent the restriction of national sovereignty and infringement of national economic interests is highlighted. The purpose of the study is to identify political and legal problems of deepening Eurasian cooperation and ways to eliminate them. The history of relations between Russia and Kazakhstan through the creation of a single trade and economic space is used as an empirical base that allows us to fully reveal the content of interaction between the leaders of Eurasian integration and barriers to its development. Methods: formallegal, historical-legal and comparative-legal.

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