This paper examines the voting behavior of the member states of the Eurasian Economic Union (EAEU) in the United Nations General Assembly (UNGA) in order to find out their preference similarities on foreign policy issues. Based on a specific dataset of UNGA resolutions from 2000 to 2020 and using two different indices of voting cohesion, the present research addresses two empirically motivated questions: To what extent does the EAEU speak in unison externally in the context of UNGA plenary? And second, what has been the impact of the formation of the EAEU in 2015 on the common foreign policy? The results reveal that the EAEU scores a ‘medium’ level of cohesion as measured in the context of the UNGA, which may indicate that members often speak with one voice, while defections still occur during controversial votes. Moreover, the findings suggest that there is no meaningful difference in cohesion between the pre- and post-EAEU periods. Finally, the study finds that Eurasian states are most cohesive on development resolutions, but least cohesive on security and human rights issues, as reflected in their recorded voting behavior.