Terrorists throughout the world have concentrated their efforts on obtaining weapons of mass destruction ie. nuclear either dirty or otherwise, sarin gas, castor bean extract, botchulism toxin, small pox etc etc . Every substance known to man that could conceivably cause mass suffering and chaos has been actively sought.
After doing some research, I have discovered a substance that so far has surprisingly escaped their notice and this stuff is scary. Urushiol, a colorless, odorless chemical commonly available. Just 1/4 oz. if dispersed properly would have an effect on literally every single person on this earth.
Silent, extremely potent, cheap and available..... devastating.
Figured it out yet?