The first inquiry into the use of chemical weapons (CW) in Syria was the United Nations Secretary-General’s Mechanism (SGM) for Investigation of Alleged use of Chemical and Biological Weapons. Adopted by the UN General Assembly in 1987, and endorsed by the Security Council (Resolution 620) a year later, the SGM enables the Secretary-General to carry out investigations in response to any UN Member State reporting possible violations of the 1925 Protocol or other relevant rules of customary international law.
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