http://www.chris-floyd.com/From the New York Times:
The number of Iraqis fleeing their homes has soared since the American troop increase began in February, according to data from two humanitarian groups, accelerating the partition of the country into sectarian enclaves...The effect of this vast migration is to drain religiously mixed areas in the center of Iraq, sending Shiite refugees toward the overwhelmingly Shiite areas to the south and Sunnis toward majority Sunni regions to the west and north.
It is now obvious that one impetus behind the "surge" was to accelerate the "ethnic cleansing" of Iraq. Given the manifest failure to establish a strong central government to serve as a client state, the conquerors now find it easier to deal with separate ethnic enclaves, which can police themselves, shake out their own internal conflicts (however bloodily) and thus establish some kind of solid leadership that can cut deals and guarantee investments. Most of the measures taken during the "surge" seem aimed precisely at ethnic cleansing: the increased support of the Iraqi government security forces -- which are largely Shiite militias -- has been matched with what some see as the lunatic policy of arming Sunni militias.
The latter is indeed a lunatic policy -- if your aim is to establish security and political rapprochement in Iraq. And although the leaders of the United States are indeed a gang of depraved moral idiots, they are not lunatics. Even they could see the folly of such a course -- again, if the aim was actually security and political cohesion. Thus one can only conclude that this is not their aim, that their aim is indeed to exacerbate ethnic conflict, to foment more violence, in what amounts to a stealth operation of ethnic cleansing.
This serves two main purposes: first, as noted above, it will help shake the country out, eventually, into more manageable enclaves -- each one stronger and more cohesive than the current government (which is largely a fictional notion at this point), yet weaker, and more malleable, than any stable and legitimate central government would be. And since the only kind of central government that could achieve stability and legitimacy in the eyes of all Iraqis would be one which was genuinely sovereign, truly independent from American domination, we will never see such a government in Baghdad as long as U.S. troops are in Iraq.