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Russian nerve agent from Skripal attack a deadly game-changer

Live sarin and VX nerve agent training
U.S. troops participating in sarin gas and VX nerve agent training. The toxin used in the Salisbury, U.K., attack is up to 10 times more potent than VX. Photo: Leif Skoogfors / Corbis via Getty Images

The Novichok or N-series nerve agent — used in last week’s attack against Russian ex-spy Sergei Skripal and his daughter Yulia in Salisbury, U.K. — is distinct from the better known G- and V-series nerve agents, which unfortunately have become more familiar after their use in Syria and by terrorist groups.

How it works: Nerve agents interfere with neurotransmitters, causing involuntary muscle contractions, impaired cardiac function and airway restriction, potentially culminating in death by asphyxiation. They interfere with the nervous system in stages, making rapid decontamination and treatment essential.