I don’t know if Russian leadership intended for it to play out like it did or were simply colonizing the new Soviet republics but they in the process created ticking demographic time bombs for the Kremlin to politically use when the time is right.
tale as old as time. Alexander the Great did it with Veterans. There are legit Greek/Macedonian ruins in Afghanistan because of it.
its a pretty good idea all around.
Usually the areas are lightly populated, with the Russians taking that depopulation into their own hands, so brining in your own people gets that land working sooner than they would otherwise.
because they are your people you don't have to train them with whatever techniques or make them change from one type of production to one that aligns with you.
Typically you pull from your own overpopulated areas, so you are helping that issue.
It provides the ethnic core to a region that will speed assimilation. Having people with the same language, beliefs, culture as the ruling government gives them an anchor and helps push the Russification from a population standpoint (making ethnic Russian babies) instead of just a top down approach to convert.
Those people moved in are typically more dependent on your government, and thus loyal, instead of being loyal to a local government.
and if you move in veterans you have a ready made source of reservists in the area in case the locals do rise up.
further it gives you a solid base in case you have to come back to the area to fight. with local intel, a safe place for troops and equipment, and any increased Russification is a bonus.
The Chinese are doing this too with the Han.