I have thought about how in Indiana Jones and the Kingdom of the Crystal Skull, the Soviet Union officials are the villains, but they are shown to be acting in reaction to existing United States weaponry and technology that is threatening their country and government. RedLetterMedia does good job of explaining this in their review of the movie.
However, their main goal is to use the titular skull for mind control against Earth's population.
spoiler
To be fair, it didn't seem like they had a lot of accuracy with the asteroids, half of them missed and that one burnt up orbiting the sun. Still, their ships were way better than anyone else's and they could have just rolled the blockade (which they did).
Didn't they also do the asteroid thing to get Earth to reveal the location of their defenses too? Or was that not stated.