To be Republican is to loud and wrong and loudly wrong whenever possible. The noise is so wrong and so loud and kept up for so long that weak minded people (the national media for example) sometimes mistake the persistence for legitimacy. Volume for validity. So if you hear one of your liberal minded friends fall prey to to thinking that Obama "has his share of blame" for Iraq -
quickly correct them.
Bush enabled the current Sunni power in Iraq by invading Iraq under false pretenses, and with no plan for the occupation.
Bush elevated Osama bin Laden and Bin Laden's dreams to legitimacy.
Bush removed Saddam Hussein, Bin Laden's key enemy in the region and shattered Iraq’s tenuous factional stability. And,
Bush bequeathed military and political power to radicalized Sunni's that would have been unthinkable prior to our handing over arms by the crate load, and tens of millions of dollars for "rebuilding" that was delivered in duffel bags off the back of trucks.