The Tsars of Russia considered themselves the rulers of the 3rd Rome, Byzantium being the 2nd. Not surprising that Putin wants to wrap himself in that reflected glory, it (Tsarist rule) did last 500 years or so and is deep into the Russian Culture.
I agree. That is why I think this documentary - made by Putin’s spiritual advisor (rumored to have converted Putin during the 80s if converted is the right word) is important because many confuse Putin’s agenda with that of a Soviet one but this documentary argues for a Russian isolationist agenda.