Assertion: soman | /r/HasProperty | stockpiled by the ussr
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text: Second, if resort to tabun has been motivated by the military consideration just outlined, there may well be powerful incentives operating upon the Gulf War belligerents to introduce those even deadlier nerve gases that offer still more potential for rapid mass-destruction: agents such as the sarin, VX and, reportedly, soman stockpiled by the USA, France and the USSR.