On scienceblogs.com there is an interesting article about statistics and “The Surge” in Iraq . It explains how there is not yet enough data to statistically determine whether The Surge is succeeding in improving the situation in Iraq. Some of the comments point out that the “ethnic cleansing” in some parts of Iraq has been mostly completed. When one of the groups in a disputed area is annihilated or driven out you can expect a reduction in violence.
The Guardian reports that Alan Greenspan has stated in his memoirs  “I am saddened that it is politically inconvenient to acknowledge what everyone knows: the Iraq war is largely about oil“. His meoirs are published as The Age of Turbulence: Adventures in a New World. I’ve added it to my Amazon Wish List.