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Chilling archive footage explaining the dangers of nerve agents during the Cold War has emerged after the poisoning of a Russian spy and his daughter on British soil.
The clip was put together by the US military in the early years of the conflict to warn its soldiers of the effects of the deadly substances.
Agent - Sergei - Skripal - Daughter - Yulia
It comes as former double agent Sergei Skripal, 66, and his daughter Yulia, are still fighting for their life in hospital after being deliberately infected in Salisbury, Wiltshire.
Made as an informative film for US recruits, the clip explains the nine symptoms of coming into contact with a nerve agent, including dimness in vision, difficulty breathing and twitching, jerking and staggering.
Types - Nerve - Agent - Time - GA
It also outlines the three different types of nerve agent available at the time, GA, GB and V, before showing a mock-up of a soldier being exposed to the deadly chemicals.
Nerve agents are defined as a toxic, usually odourless organophosphates used as chemical weapons in gaseous or liquid form.
Transmission - Nerve - Impulses - Difficulties - Coughing
They disrupt the transmission of nerve impulses, and may cause breathing difficulties, coughing, vomiting, muscle weakness or paralysis, convulsions, coma, and death.
They were first developed in 1936 by German scientists attempting to invent a new insecticide to use on crops.
V - Variant - Times - G - Series
The V variant is four times as harmful as the G series and was first discovered by British scientists in 1954 at Porton Down, Wiltshire, where contaminated objects have been sent for testing in the Skripal case....
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