Eight is not enough for a verifiable clash of civilisations

Juan Cole counts the number of fronts in Iraq - The Eighth Front:

So in addition to the Arab-Kurdish front already counted, that makes 2 more fronts, for a grand total of 8. Not all 8 are very active at all times. But all 8 do break out into substantial violence from time to time. And we may have just seen a flare-up in no. 8.

If the US didn't invade Iraq, to fight them over there, in which parts of the US would these fronts be located?