article_snippet: The retired head of chemical and biological weapons for the Army believes the Tube or sporting events could be the target.
article_snippet: If the attack was on the Tube, chlorine is heavier than air, so the attack would quickly drop to the tracks.
article_snippet: It is the panic that would create the carnage, so it is important people are prepared for the carnage. '
article_snippet: Fear of toxic chemicals and chemical weapons is the killer not the toxicity of the agents.
article_snippet: It is 20 years since the sarin attack on the Tokyo underground, but it took three years and $10m dollars to create 1kg of sarin
article_snippet: The U.N. Security Council recently approved a United States-drafted resolution that condemns the use of toxic chemicals such as chlorine in Syria, while threatening militarily enforced action in the case of further violations.
article_snippet: Horrified by the effects, 15 countries signed the Geneva Protocol.
article_snippet: More severely affected individuals may suffer acute lung injury (ALI) and/or acute respiratory distress syndrome (ARDS) and one in 100 will die.