Originally posted by the Voice of America. Voice of America content is produced by the Voice of America, a United States federal government-sponsored entity, and is in the public domain. Chemical Weapons Watchdog Confirms Nerve Agent Used in Navalny Poisoning VOA News Experts from a global chemical weapons watchdog confirmed Tuesday that the substance used to poison Kremlin critic Alexei Navalny was from the banned Soviet-style Novichok family of potent nerve agents. The [1]Organisation for the Prohibition of Chemical Weapons(OPCW) said that the biomarkers in Navalny's blood and urine had "similar structural characteristics as the toxic chemicals belonging" to the Novichok group. Navalny was airlifted to Berlin for treatment after falling ill on a flight in Siberia on August 20. A number of Western governments called for an international investigation into the case, with many global leaders suspicious that the Russian government may have been involved in poisoning the prominent opposition figure. Navalny, 44, was discharged on September 23 and has vowed to return to Russia to continue with his opposition work after completing rehabilitation in Germany. References 1. https://www.opcw.org/about-us .