Sarin was found. Does it matter?
In the final analysis, the war against Iraq was the wrong war. Not because the United States used preemptive military force—preemptive self-defense would have been justified in the face of a truly imminent threat. Not because the United States acted without the consent of the United Nations—no country should surrender its defense to a vote of other nations. And not because Iraq had weapons of mass destruction (WMD)—none has been discovered and, even if they existed, they were not a threat.
The war against Iraq was the wrong war because the enemy at the gates was, and continues to be, Al Qaeda. Not only was Iraq not a direct military threat to the United States (even if it possessed WMD, which was a fair assumption), but there is no good evidence to support the claim that Saddam Hussein was in league with Al Qaeda and would have given the group WMD to be used against the United States. In fact, all the evidence suggests the contrary. Hussein was a secular Muslim ruler, and bin Laden is a radical Muslim fundamentalist—their ideological views are hardly compatible.
So now this new discovery will bring a whole lot of "I told you so's" from the pro-war crowd