Via TBogg, we learn of VodkaPundit:
Let's get the bad out of the way first.
An Iraqi Civil War would be a disaster. Every bit of reconstruction, every small gesture of friendship between peoples and sects, every last chance of keeping Iraq viable and whole… well, that's probably all gone. Lacking professional armies and Western ideas of shame, modern Arab wars can drag on as guerilla actions for decades. Let's not forget that in the process, a lot of good people, ours and theirs, would die in Iraq.
Western idea of shame?
Lots of people would die?
Now for the good news.
If we're looking at an Islamic civil war, then vast numbers of good people will die, from Libya to Oman. Luckily, they won't have to be our people. In the very worst-case scenario, the Middle East could blow up – and we could bug out, pronto. "This is the good news?" you ask. Yes, and I'll explain why.
Christianity was a violent religion until the Thirty Years War. That war lasted so long, and killed so many people (the population of Germany was reduced by a third), that Christendom lost its bloodlust.
And nobody was ever killed in the name of Christianity again.