As we found out with Guernica in Spain, military powers do like an opportunity to try out various weapons in real war situations to determine their effectiveness. This obviously cuts both ways as the yanks and the rest of the western powers will be closely analysing the Russian armies successes and fails. I recall the GR1 Tornadoes and particularly the Stealth Bombers in the Gulf war '91 reportedly shocking the Russians with the accuracy and effectiveness of their bombing raids.