Russia Team Lead Mason Clark and Russia Analyst and Geospatial Team Lead George Barros discuss the effects of HIMARS and other advanced Western weapons deliveries on the conflict and the nature of Vladimir Putin's so-called red lines in the conflict. George provides insight into how ISW produces its world-renowned maps of the war in Ukraine. ISW is marking the first anniversary of Russia's 2022 invasion of Ukraine with a three-part interview series between ISW Russia Team Lead Mason Clark and senior members of his team to discuss the war so far, their assessments, and ISW's research methodology.