Pretty much what it says on the tin - how do people think Star Wars (and the Soviet equivalents) would have evolved if the Soviet Union had not collapsed in 1991? (Let's assume for the sake of argument that in this TL the Soviets follow a hardline path in the 80s and turn into even more of an armed camp than OTL, surviving by oppressing its own population and pretending to be a credible competitor to the USA.)
My own view is that Star Wars was basically dead before the Soviet Union even fell, but, with the Soviet Union staggering on, my suspicion is that research would have continued on less ambitious space weapons throughout the 90s.
Exactly what that would mean though, I am less sure.
fasquardon