The interesting thing here is that they're transporting them by civilian cars. But considering the defensive (and chaotic) nature of this war, that's understandable
I read somewhere that one of the way Russia might try to replenish their reserves, outside of the draft, is by using central asian migrants by offering them citizenship
I think this checks out. The Wikipedia page for SU-34 listed a "47th Bomber Aviation Regiment" as an operator. Then I found this
website (archive) that listed a "47th Independent Composite Aviation Regiment" that used SU-34. Both sites mentioned they're stationed on Baltimor Air Base, Voronezh Oblast
The translation basically saying the guy in the middle is the Valery "Gruzd". He fought there since 2014, 72th Zaporozhye Black Brigade (?). He only asked for coffe and cigarettes as reward (?), Hasn't drink Vodka since 1988. The second pic is him with the fighters of OUN Battalion