Originally Posted by
YorkieFlyer
I wonder whether the OP might miss the flight to Russia?
But it doesn't matter, at initial check-in, the airline will make sure you are able to enter Russia, as this is the ticket purchased. If you cannot enter Russia, they will deny you boarding at the initial check-in point. If you tell them you are missing the flight that arrives in Russia, you are, "most likely", breaking the contract of carriage, which will also likely get your ticket canceled at the initial check-in point.