Russian troops are increasing the use of chemical weapons in Ukraine, in violation of the Chemical Weapons Convention, to which the Russian Federation is a party, according to the Institute for the Study of War (ISW). The Institute cites a briefing by Andrii Rudyk, a spokesperson for the Ukrainian Centre for Research of Trophy and Advanced Weapons and Military Equipment of the General Staff of Ukraine, on January 25. During the briefing, the captain said that in December 2023, Russian troops began using RG-VO grenades with chloroacetophenone, which is a type of tear gas used to combat mass rio…