I don't follow how is this concerning. All people with more than one citizenship I know at least via a few handshakes use their passports exactly this way for travel.
Why would a Russian citizen go through the hoops of getting a Russian visa on their Czech passport? Does Czechia not allow dual citizenship to call the second secret?
Why would a Russian citizen go through the hoops of getting a Russian visa on their Czech passport? Does Czechia not allow dual citizenship to call the second secret?