The United States and Russia continue to clash at the UN Security Council over investigations.
Assassination attempt indicates Russia has a nerve agent in violation of the Chemical Weapons Convention.
Western powers struggle against chemical weapons use by Russia’s ally, Syria.
India Joins Australia Group
States-parties to the Chemical Weapons Convention (CWC) at their annual meeting late last year welcomed progress on stockpile destruction in several states that possess chemical weapons, but continued to argue over chemical weapons use in Syria and express concern over emerging chemical threats.
Russian Vetoes End Syria CW Probe
Moscow had world’s largest chemical-weapons arsenal.
OPCW Council Selects New Leader
Panel Cites Syrian Regime in Sarin Attack