Until recently, White House officials led the American public to believe violent opposition in Iraq was primarily the consequence of al Qaeda opperatives and some left-over Baathists, operating largely without the consent of the majority of the Iraqi people. Recent events have demonstrated this notion to be innacurate (at best).
With both, sunni and shiites building up a country-wide armed resistance against "foreign" forces (i.e. our armies), it won't be long before our troops find themselves enmeshed in a bloody conflict of national liberation and independence (this scenario sounds awfully familiar, doesn't it?)
Professor Fawaz Gerges puts it best . . . (click link to read the entire article)
And at the end of the day, regardless of what you think of the political configuration in the country, there is no military solution to the violent struggle unfolding in Iraq.
We must think of a political exit strategy, a political solution, political solutions to deal with the situation in the country.