I like Dr. Alibek.
He was the one who first told me that the FBI suspected Dr. Al-Timimi.
I had asked him if knew Al-Timimi.
Ken thinks US-based supporters of the militants are behind the anthrax mailings.
That is my guess as well. In Germs, by Judith Miller, (2001), the ease with which a Bio-Weapons lab can be set up is illustrated nicely. A halfway decent chemist with adequate funds can set one up using of-the-shelf dual-use equipment right here in the US. No need to smuggle anything across the border.
Couple that with reports of Iranians being nabbed at the mexican border on a regular basis, and things could get very intersting in the not-so-distant future.