Russia is not a imperialist country in the moment. I will cite myself:

Looking into Russia: In whose interests does Putin rule? What impact has the privatization of state assets had on the way the Russian capitalist elite perceives its security interests? Which elements of Putins foreign policy have changed compared to the soviet foreign policy? Which have remained? Russia is trying to restore the previous status quo, where its bourgeoisie could exploit the country undisturbed. Russia has become a target of Yankee imperialism not because of the autocratic nature of the Putin regime but, first, because its defense of the interests of Russian capitalists clashes with the United States quest for world domination and its related preparations for war against China. The attack on Ukraine is a thoroughly reactionary response to the expansion of U.S. hegemony into Russias spheres. In doing so, Putin invokes the reactionary legacy of tsarist Great Russian chauvinism and revives the foreign policy of Tsar Nicholas by also calling for support for “Mother Russia.”