With any POD after 1054 AD, or later, how big can plausibly Russia get as of 2011? It is required that the country is still recognizable as Russia, in the sense that an Eastern Slavic language reasonably close to Russian is the dominant official language (it is not required that it is the majority language) and the center of power is historically located in OTL European Russia (including Belarus and Ukraine). The actual capital can be located everywhere provided that it is or becomes Russian in character.