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Chemical weapon - Wikipedia
Warhead - Wikipedia
Chemical weapon | History, Facts, Types, & Effects | Britannica
Chemical warfare - Wikipedia
What is a Chemical Weapon? - OPCW
U.S. Is Destroying the Last of Its Once-Vast Chemical Weapons …
Chemical Weapons: Frequently Asked Questions - Arms Control …
Explainer: What are chemical weapons and are they illegal?
The world’s chemical-weapons stockpiles are gone — but a
Chemical Weapons Convention - OPCW
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