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"I want to thank the Arms Control Association … for being such effective advocates for sensible policies to stem the proliferation of weapons of mass destruction, and most importantly, reduce the risk of nuclear war."
– Senator Joe Biden
January 28, 2004
U.S. Alleges New Syrian Chlorine Attack
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U.S. officials have confirmed the United States believes that Syria once again has used chlorine-based weapons, this time in a May 2019 strike in Syria’s Latakia Province. According to The Wall Street Journal, the U.S. intelligence assessment indicates that the May 19 attack was conducted by Syrian President Bashar al-Assad’s forces and killed at least four people.

A Syrian girl holds an oxygen mask over the face of an infant at a makeshift hospital following a reported gas attack in Douma on the outskirts of the capital Damascus in 2018.  (Photo: Hasan Mohamed/AFP/Getty Images)The 1997 Chemical Weapons Convention (CWC), to which Syria acceded in 2013, prohibits the production, stockpiling, transfer, and use of chemical weapons. A joint investigative mechanism led by the treaty’s Organisation for the Prohibition of Chemical Weapons (OPCW) and the United Nations has verified the sporadic but regular use of chemical weapons and of other toxic chemicals, including chlorine, in Syria since 2014.

Although the OPCW defines chemical weapons as “any chemical intended for chemical weapons purposes” and includes chlorine on a list of chemical choking agents, chlorine gas is a dual-use chemical and not a scheduled agent explicitly banned by the CWC. Consequently, the Syrian government’s supplies of chlorine were not part of the OPCW-led removal and destruction of Syria’s sarin and mustard arsenal and precursor chemicals, executed shortly after Syria’s accession to the CWC. (See ACT, December 2014.)—JULIA MASTERSON