I really love WMD Insights.

I’ve been meaning to link to a recent article by Markus Binder tracking how the IC has toned down its assessment of Iran’s CW capabilities:

In the Sec. 721 report covering the first half of 2003, released in November 2003, we see the beginnings of a process of declining certainty associated with descriptions of Iranian CW activity and capabilities. The report states that Iran “likely has already stockpiled blister, blood, choking, and probably nerve agents” retreating slightly from the previous bald assertion that Iran “has” a CW stockpile. [17] A further reduction is seen in the Sec. 721 report for the second half of 2003, released in November 2004. This report confines itself to stating that “Iran may have already stockpiled blister, blood, choking, and possibly nerve agents.” [18]

Finally, in the most recent Sec. 721 report, publicly released in May 2006, but covering activities in 2004, all reference to stockpiles and delivery systems was removed. All that remained was the statement that Iran “continued to seek production technology, training, and expertise from foreign entities that could further Tehran’s efforts to achieve an indigenous capability to produce nerve agents.” [19] Although Sec. 721 reports are supposed to be released annually, the DNI has not publicly released an update since May 2006, and it is therefore not possible to determine whether or not DNI has maintained or modified its 2004 position. The changes in the CIA’s public reports alone are insufficient to reach a conclusion about the wider U.S. intelligence community’s contemporary assessment of Iran’s CW program or its capabilities. Fortunately, although there have been no further releases from the CIA, we do have access to the assessments of at least two other U.S. government agencies for the period 2004 to 2007.

We now have two more 721 reports from 2005 and 2006. Although both demonstrate the declining trend identified by Binder, the 2006 report contains the judgment that Iran “maintains a small, covert CW stockpile.”

Now, the old estimate was that Iran had “several thousand tons” of CW weapons. So, I started to wonder, what makes a chemical weapons stockpile large? After all, as Secretary Powell observed, “Even the low end of 100 tons of agent would enable Saddam Hussein to cause mass casualties across more than 100 square miles of territory, an area nearly 5 times the size of Manhattan.”

Oh, sorry for bringing that up. I feel all weird and awkward now.

As it turns out, “large” is a pretty elastic term that has been used to describe Libya (23 metric tons), pre-1991 Iraq (690 metric tons) and Russia (40,000 metric tons).

What’s the over/under on the size of the Iranian CW stockpile? 1 ton? 10? 1/10th?