[cwb]

From Canada's "Aerospace and Defence Weekly"...

"VX has not been used to its fullest potential yet because it is too dangerous to use for local attacks with wind that could blow the VX back onto the base. This factor has helped to keep VX from being used to cripple local nations. If these weapons were launched against a nation then there would be the possibility of a nuclear counterattack--because VX is a weapon of mass destruction--that spreads from impact point killing all in its path."