[thesmok]

Russian citizenship is not something that people cherish or want. Most of the Russian territory and population has been occupied at some point: Siberia long time ago, Caucasus in the past centuries, Crimea in 2014. Russians don't care about those people the same way the care about their own.

[thriftwy]

4 out of 5 Russian citizens are ethnic Russians, and those are prevalent in Siberia, in Russian Far East, in Crimea and (arguably) in the "new territories" also.

Russian citizenship is a prized asset in the post-USSR countries to the extent that people spend effort to move to Russian Federation and pay money to engage in shady schemes to obtain it.