http://www.dailykos.com/storyonly/2007/1/19/9117/97359This is a public relations script written by a White House lackey. Bush orders al-Maliki to get with the program. Al-Maliki rails against Rice and the U.S. in public, but takes immediate action, rounding up 400 bad guys (of the tens of thousands of armed militia men in Sadr City, along with selected leaders). Al-Sadr makes a public statement declaring a holy month off to flee for his life, and consider what action to take.
In reality, this is a planned vacation for a few hundred Sadrists. Perhaps the selected fall of a less than favored Sadr loyalist. It plays well in the press, but does little or nothing to impact the military power of al-Sadr. He takes it easy for a month, until the pressure of the surge dies down. And then it is back to the business at hand. Purging as many Sunnis as he freaking-well can.
I come to my conclusions based on al-Sadr's past history. He has proven willing to fight both the Americans, and other factions, both Sunni and Shia, within Iraq. He possesses the strongest single fighting force in Iraq, save for the U.S. military (or so we are told). When he feels his interests are threatened, like when al-Maliki was on his way to Jordan to meet with the Bushies, he was willing to threaten a pull out from the coalition government (which does not exist without his continued support).
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The fact that al-Sadr is going on vacation, rather than fighting, indicates that he has a deal with al-Maliki to put on a show of "Oh the government is serious about a death-squad crackdown now." Imagine gangsters in Chicago during prohibition. You own the police force, but every now and then, for the sake of public officials, and the public itself, you have to agree to a staged raid on your operations. Everybody gets bailed out by the corrupt system, and it is on to business. And if the day ever comes when the system is really going to take you down without your acquiescence, you fight like hell.
It's just a theory, but it sounds pretty logical and typical for what has been happening in Iraq.