Were blogger not too temperamental at times, the quote below would have been included in the previous post as a partial example of analogies cutting both ways:
"President Bush provoked liberal outrage when he cited the Vietnam war in making the case for the war in his speech at the VFW convention. Of course, Vietnam analogies cut both ways. The Iraq war is, as critics point out, like Vietnam in that we are trying to create a legitimate, capable government in the midst of a brutal war of insurgency — and learning (or re-learning) how arduous and complicated a task that is. But Bush was right to remind us of the horrific humanitarian costs of the precipitous withdrawal from Southeast Asia demanded by liberals in the 1970s. He might have mentioned another similarity with Vietnam — how Democrats were in such a fever to pullout that they disregarded any encouraging signs on the ground and abandoned all strategic sense."