No the invasion was because Iraq was supposed to destroy their WMD, and obviously they didn't did they? Be it 1, 100, 100,000.. they are all WMD.
But it will never end.. whatever they find you will always have people saying.. "well that's all and good but show me this and I'll believe you".
how about this?
http://edition.cnn.com/2003/WORLD/me...qaeda.weapons/