VX Nerve Agent: A Deadly Weapon, Rarely Seen The substance, classified as a chemical weapon and kept for decades in the arsenals of many militaries, has never been used in combat. Share: Facebook Twitter Google+ Stumble Digg Email ThisBlogThis!Share to XShare to Facebook Related Posts:Facebook Briefly Suspends Account of Outspoken Chinese BillionaireVolleyball Over, North Koreans Go Back to Work at Nuclear Site, Analysts Say140 Soldiers Killed in Taliban Attack on Afghan Base, Official SaysU.S. Raid Killed a ‘Close Associate’ of Islamic State Leader, Military SaysVietnamese Villagers Release 19 Officials Held Hostage in Land DisputeAfter ISIS, Smoking Openly to Feel Free