Tests have confirmed that the Improvised Explosive Device which exploded yesterday contained 3-4 litres of Sarin. Well, not quite, it contained three to four litres of a binary compound that, when mixed, forms Sarin.

Addtionally, another IED with Mustard Gas was found on May 2nd.

Here's a little bit (thanks to Free Republic) on the lethality of Sarin Gas:

Lethal dose of Sarin: 0.5 milligrams.
Density: 1.089 g/cm3
Grams per liter: 1,089g
Lethal doses per liter: 2,178,000
Lethal doses of sarin contained in this shell: 6,534,000 to 8,712,000

In reality, of course, the effects would not be nearly that high. However, in 1995, Japanese Cultists used about five litres of very low-grade Sarin to kill five and injure six thousand. I imagine this quantity of weapons released, say, in the New York Subway System by suicide terrorists could kill hundreds or thousands.

This makes it quite clear to me that these materials are not being made by the terrorists themselves, nor are they being shipped from elsewhere. No terrorist with any sense and the ability to make chemical weapons would manufacture binary effect artillery shells*.

These are Saddam's weapons. This is a "Smoking Gun." More to come.

*A Binary Chemical weapon is one in which the deadly compound is formed as a result of the mixing of two chemicals.