You would not believe the list of things that haven't been accounted for yet. Here's a quick sample:

Approximately four tons of VX nerve gas.
Growth media for over 20,000 liters of biological agents.

And the list goes on and on. The estimation is that with the unaccounted materials, Iraq can get a sizeable stockpile of biological weapons within weeks. It would only take them months to get the chemical weapons ready (hint: think nerve agents like tabun, VX and sarin), that is if they need more than the 360 tons that are still unaccounted for as of 10 Jan 2003.

If you have seen some of these lists and the numbers involved, it because very scary, very quickly. Add to that the fact that they have already demonstrated a willingness to use these weapons, and it becomes even more scary.

Edit: Fixed the date (from last week, to 10 Jan), and changed because to becomes.