LEt's assume this is true
Let's assume that Iraq had stocks of chemical weapons.
Let's assume that these weapons made their way to Syria.
Let's assume they made their way into the hands of terrorists who planned to blanket Jordan id a cloud of Sarin, Ricin and VX.
OK.
Now let's revisit one of the reasons for going to war when we did - that Iraq had stockpiles of WMD and we could not afford to let these get to terroraist groups.
If all the above is true, what does that tell you about the efficacy of going to war in the first place?