Anti-imperialism does not mean "anti-empire". Imperialism is a system and the belief among libs that we're talking about empires when we say anti-imperialism is caused by their complete and total lack of understanding of any leftist theory.
Imperialism is the highest stage of capitalism, when the financial class form international groups together and they merge together with the state to steer the entire resources of those states towards the pursuit of more capital for themselves, as a class.
The imperialists in the world are the west, with the US at its head. Anti-imperialism means that.
There is no other imperialism in the world. Could Russia emerge as the new leader of imperialism if the existing imperialist leader collapses (the US), yes it could, and it would be the most likely one to become it. But is it imperialist right now? No. It is a capitalist state with a national bourgeoisie pursuing their interests, not yet imperialist without a massive realignment of the international bourgeoisie.
Dear Blahaj user hungryphrog, please read theory if you want to understand us when we say we're "anti-imperialist", particularly Lenin's "Imperialism, the highest stage of Capitalism". You have misunderstood what that phrase means when we use it.
Lenin provides a careful, 5-point definition of imperialism:
"(1) the concentration of production and capital has developed to such a high stage that it has created monopolies which play a decisive role in economic life; (2) the merging of bank capital with industrial capital, and the creation, on the basis of this "finance capital", of a financial oligarchy; (3) the export of capital as distinguished from the export of commodities acquires exceptional importance; (4) the formation of international monopolist capitalist associations which share the world among themselves, and (5) the territorial division of the whole world among the biggest capitalist powers is completed. Imperialism is capitalism at that stage of development at which the dominance of monopolies and finance capital is established; in which the export of capital has acquired pronounced importance; in which the division of the world among the international trusts has begun, in which the division of all territories of the globe among the biggest capitalist powers has been completed."
I suspect they will never read this due to de-federation, but I had to say it anyway.