Russia it should be noted is called the Russian federation. It is a federation of states some of which are majority non Russian population (Tartars, Chechyns, etc).
It comes down to geography and demography ultimately.
First let's look at the map.
The geographic continuity between the Russian Federation and the late USSR is almost seamless. The RF inherited the Russian Soviet Federative Socialist Republic's (RSFSR) boundaries, which were essentially the largest and most influential republic within the USSR. However the Russian Empire which existed prior to the 1917 Revolution and genocide had significantly different borders, encompassing territories now recognized as independent states like Finland, Poland, and parts of the Baltic states. Therefore, the modern Russian Federation's borders are more reflective of the USSR's boundaries rather than the Russian Empire's (which is truer Russia).
With these change of boundaries comes the problem with these other non-Russians. The demographic composition of the Russian Federation is heavily influenced and was directly caused by the jew policies of the Soviet era. The various mix of ethnic groups that were part of the USSR, such as Tatars, Bashkirs, Chechens, and others had no historical presence in Russian affairs.
The USSR implemented policies that forced integration of these various ethnic minorities within its vast territories. Unlike the Russian Empire, which often treated these groups as fringe dwellers or subjects with limited rights, the Soviet state incorporated them into the socio-economic fabric of the nation as an "idea". This included granting them autonomous regions and republics with the same the Soviet framework.
The Soviet authorities reorganized territorial boundaries to create administrative divisions that recognized ethnic groups, such as the Tatar Autonomous Soviet Socialist Republic (TASSR) and the Chechen-Ingush Autonomous Soviet Socialist Republic (CIASSR). These changes promoted a sense of "inclusion" and centralized control to the detriment of the historical Russian authority.
Many of these then ethnic minorities were subjected to forced labor and internment in gulags, which also led to the spread of these diverse populations across the USSR, including into the historical Russian heartland, which they had no historical presence or business being in. The Soviet forced integration of them into the industrial and economic system is not too different than how the Americans did with their blacks, and now everywhere you go in America except for a few rare counties, you experience the darkest depths of humanity snarling back at you.
The education system and state propaganda promoted Soviet ideals and loyalty to the state across all ethnic groups. Which attempted to foster a unified Soviet identity that was intended to transcend individual ethnic affiliations. The USSR's federal structure pushed for the political representation of various ethnic groups through autonomous republics and regions. This "multicultural" system gave these groups a formal role within the Soviet state, which was a vast departure from their righteous marginalization during the Russian Empire (these people are barbaric and un-Christian after all).
It wasn't just a matter of convenience either. The Soviet government implemented quota systems to ensure representation of ethnic minorities in government and the Communist Party, further integrating them into the political framework of the state. They were hellbent on deracinating all these people, but most importantly the Russians.
The jews were restricted to the Pale of Settlement for good reasons, no, for holy reasons, and this benefitted the Empire. They were excluded from political power, and certainly did not host Purim parties (celebrating the death of over 75,000 gentiles in a massacre) in lavish Tsarist-era mansions in the Moscow suburbs with all their Rolls Royce and Maserati cars parked out front.
Muslims in the Volga and Caucasus region were seen as subjects and had no political bargaining posture that put them on equal footing with Orthodox Christians to make demands for which the Christians were relegated to concede to, unlike today.
The Russian Federation for that matter, is officially a secular state, with freedom of religion (religious pluralism) enshrined in its constitution, just like freemasonic USA. While the Russian Orthodox Church enjoys a privileged status, other religious groups like muslims and jews are legally recognized and have greater freedoms and political clout, unlike with an Orthodox state where they would not. For au contraire examples, look at the only jewish "nation" where nothing else is recognized legally than talmudic judaism, and all the muslim countries that won't allow any churches to be built. Christians are getting the short end of the stick worldwide because they have no nation that advocates for Christian ONLY like the Russian Empire used to. Religious pluralism is right up there in dangers to Russia just like too many aliens.
Kieven Rus is 1142 years old (founded in 882AD)
Tsarist Russia is 562 years old (essentially founded with Ivan III)
The USSR lasted for 74 years (1917 - 1991, 69 years unchecked with power 1922-1991)
This "Russian Federation" is a continuance of the USSR since 1991 (33 years). This is a powerful example of what just three to four generations of jewish destruction will do to a nation, make them forget their past and twist their history to suit the agenda of their masters and not the truth.
If when the Soviet Union collapsed, Russia was in the hands of Russians with no amnesia or brainwashing, they would have reverted back to the Christian Imperial way as it is in their blood. However, Russia was inherently changed from the Bolsheviks. Russian identity is five times longer in Tsarism than it is with anything introduced in the Soviet era, and 11 times longer historically with pure ethnic tribalism. It takes more than four score of jewish lies to erase these genetic memories, something that the Orthodox faith had kept alive.
Immigration to Russia proper should require conversion to Orthodoxy and the applicant verifiably living as an Orthodox Christian for at least two years prior (written testimony from local hieromonk or Bishop) to their arrival period under a scrutinizing investigation, but they're giving visas to any degreed pajeet just like the ziocons in America want to. Then you will see how many Pakis and Africans and Indians and Mongols come to Russia to truly live a cleaner life, even the western grifters won't go there unless they are serious and committed.