Charles Bierbauer weighs in on the Russian invasion of Ukraine and possible use of chemical weapons. Bierbauer was the Moscow Bureau Chief for ABC News in the late 1970s and early 1980s. More: https://www.wltx.com/article/news/nation-world/ukraine/russia-ukraine-war-tuesday/507-850004c3-d872-4059-860e-9b201d50dd3d