Some of my Conservative friends might be put off by this, but take a look at this video on how the Soviet Union collapsed. The Classic Liberal posted it, and it is an hour long. However, it is worth the time to view, or at least listen.
Now, one of the premises here is that Reagan confrontation of the Soviet Union, both rhetorical and military, was not a significant contributory factor in the fall of the Soviet State. Now, think about this. On the surface, leftists might celebrate this, saying that Reagan really wasn’t the hero that so many make him out to be. However, then those leftists would also be admitting that the Soviet Union collapsed under the weight of their own failure. Reagan didn’t “kill communism,” communism died because it was an enviable abomination that is so totally inconsistent with human nature, that it could not have survived, and only lasted as long as it did on the massive piles of corpses that it generated.