From what I've seen, these were illegally obtained CONVENTIONAL weapons, nto WMD's. I do not think, if I'm correct, that meets the UN "line in the sand" for possible coflict, but it does show that Iraq is not being fully honest with the UN in their dealings on this issue. They obviously didn't put those weapons in that 11,000 page "complete report" on their weapons. So much for Saddam being truthful, as some had naively hoped on here.
Again, to me this does not, in and of itself, constitute any trip-wire for conflict. I don't think we've reached that point. I think it instructive, however, for all those that oppose an attack on Iraq under any circumstances, to note the tough words of Hans Blix, the UN point-man in this process. He's hinting at war himself now, and that's not a good thing.