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handle is hein.crs/govehgc0001 and id is 1 raw text is: Congressional                                                    ____
~ Research Service
Resurgence of Chemical Weapons Use:
Issues for Congress
Updated March 11, 2022
With increasing numbers of incidents, the use of chemical weapons (CW) has become a growing
international concern two decades after the international community decided to ban them under the 1997
Chemical Weapons Convention (CWC). The United States has said that Russia may be planning to use
biological or chemical agents against the Ukrainian people ... for assassinations, as part of a staged or
false flag incident or to support tactical military operations. Syrian government forces have used the
nerve agent sarin and chlorine bombs dozens of times since 2013 in that country's civil war. The Islamic
State used mustard gas in northern Iraq in 2015 and 2016. North Korean agents used the nerve agent VX
to assassinate Kim Jong Nam, the half-brother of the North Korean leader, at the Kuala Lumpur
International Airport in February 2017. Russian agents used the Soviet-developed Novichok-class nerve
agent in an attempted assassination of a former Russian spy Sergei Skripal in the United Kingdom in
March 2018. Russian opposition figure Alexei Navalny survived an August 2020 Novichok-class nerve
agent poisoning, also likely perpetrated by Russian intelligence agents, according to the State Department.
Prior to the Syrian civil war, there had been no maj or recent use of chemical weapons since the 1995
terror attack by the Aum Shinrikyo in Tokyo and by Iraq in the 1980s during its war with Iran. Some
argue that the lack of accountability for such incidents undermines the international norm against
chemical weapons.
The Organization for the Prohibition of Chemical Weapons (OPCW), originally established to oversee the
destruction of chemical weapons stocks under the CWC and promote the safe and peaceful use of
chemicals, now has additional challenges and responsibilities. States may request OPCW assistance in
investigating cases of CW use. CWC states may also request challenge inspections at facilities in member
states suspected to be in violation of the convention. To date, the CWC challenge inspection provision has
never been invoked.
After the use of nerve agent on its territory, the UK called for a Special Session of the OPCW Executive
Council in June 2018 to highlight the gravity of chemical weapons use and to call for giving investigators
the mandate to attribute an attack when possible. CWC member states approved a decision that granted
the OPCW the added authority to attribute chemical attacks under investigation. In addition, the CWC
states in November 2019 adopted two decisions that amended Schedule 1 of the CWC's Annex on
Chemicals, adding two classes of nerve agents developed during the Cold War-the Novichok class of
nerve agents as well as some carbamate compounds to the schedule, subjecting them to the CWC's
Congressional Research Service
https://crsreports.congress.gov
IN10936
CRS INSIGHT
Prepared for Members and
Committees of Congress

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