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Years later, there was a push to officially renounce the use of chemical weapons in war, which became the chemical weapons treaty... but it included exceptions for domestic use.

I frankly think that we don't know much about the long-term effects, especially in civilian exposure with kids or elderly or people in the street who might have some kind of lung disease already. There's very few follow-up studies. These are very active chemicals that can cause quite significant injury, so I'm concerned about the increased use of these agents. [....] I'm very concerned that, as use has increased, tear gas has been normalized. The attitude now is like, this is safe and we can use it as much as we want.