mono-ethnic societies (i.e., societies in which there is a single dominant majority ethnic group representing over two-thirds the population)
The Comparative Survey of Freedom 1989-1999
we define countries in which over two-thirds of the population belong to a single ethnic group as mono-ethnic, and those without such a two-thirds majority as multiethnic.
Итого, по нормативам Freedom House Россия в настоящий момент является чисто моноэтническим государством, причем "с большим запасом". В отличии от СССР (на момент распада).