In article ,
"Simon Robbins" wrote:

"Chad Irby" wrote in message
. com...

There's no such thing as a "defensive" chemical or biological weapon.

Why? How is it any different in that respect from any other weapon designed
to kill or maim those you're fighting?

Usual problems:

- Effectivity is often indeterminate (you don't always know how much
lag there might be between contact and incapacitation).

- Targetted area is again difficult to constrain. If the wind shifts,
you can be looking at having to deal with your weapon turned back on
you, or you end up taking out your own people who might be in close
proximity to the intended target (close as in miles, rather than meters).

- Area effects can mean that you end up with your own territory being
denied to you for some time, assuming that you even meant to effect your
own territory, rather than just your opponent's.