I checked my handy dandy (so-so) reference guide:
http://www.GlobalSecurity.org and winnowed through the countries reported to possess bioweapons (Click on "special weapons"; then click on "country list").
North Korea, Pakistan, India,Egypt, and China come to the forefront. China is believed to have " advanced biotechnology infrastructure " and is confirmed to have ignored the Bioweapons Convention of 1987,to which it was a signatory party,and exported special weapons to at least one country: Iran-(which has capabilities of its own.)
Iran,could very well be added to the list of states willing to go the extra mile to terrorize us.
India should also be taken into consideration,oddly enough, as they have "substantial potential for bioweapons production for offensive purposes".Among the nice stuff they have studied for this purpose are:
Anthrax,brucellosis,cholera,bubonic plague,smallpox,viral hemorrhagic fever,and botulism.
There have been disease outbreaks in remote parts of India that are reminiscent of cold-blooded bioweapon testing on some of their "minority" ( Non-Hindu ) population.
Although they do a lot of business with us,they have never been overly fond of us, and are most certainly sophisticated enough to mount a "false flag" bio-attack; especially if they were able to convince us their sworn enemy,Pakistan was behind it.
"There have been disease outbreaks in remote parts of India that are reminiscent of cold-blooded bioweapon testing on some of their "minority" ( Non-Hindu ) population."
India never really got hit with SARs last year...several on FR were watching and waiting to see if there would be a natural population immunity.