(referred from Jordon Cooper)

But in the end, the Soviet Union did fall. And the hawks' policy of confrontation did contribute to its collapse. So too, of course, did the economic and military rot most of the hawks didn't believe in, and the reforms of Mikhail Gorbachev, whom neocons such as Richard Perle counseled Reagan not to trust. But the neocons did not dwell on what they got wrong. Rather, the experience of having played a hand in the downfall of so great an evil led them to the opposite belief: that it's okay to be spectacularly wrong, even brazenly deceptive about the details, so long as you have moral vision and a willingness to use force.

(from here)