This might be related to or be an offshoot of Fomenko's alternate history? One of the tangents in his theory, as I understand it, is that there was a large pseudo-Russian or proto-Russian empire that has largely been erased but was incredibly influential and was mingled into every aspect of antiquity -- basically the idea is that every empire pre-1000AD in the western world was the same empire.
[1] https://www.discovermagazine.com/the-sciences/what-is-the-lo...