Reply #4: You are aware that train of thought has been challenged?

[Jefferson23]

snip* Petraeus also came out unambiguously in his talk at Heritage for opening communications with America’s adversaries, a position McCain is attacking Obama for endorsing. Citing his Iraq experience, Petraeus said, “You have to talk to enemies.” He added that it was necessary to have a particular goal for discussion and to perform advance work to understand the motivations of his interlocutors.
http://washingtonindependent.com/11381/petraeus


"You lose credibility and give comfort to the enemy." Sounds like a very strong RW talking point, I'm not sure what credibility you imagine would be lost, although you might lose your screaming meme if you engage your enemy.