Yaroslav “Varnak” Ivanov, a young Ukrainian musician, writer and soldier serving in a separate electronic warfare unit, was killed while carrying out a combat mission on the front line. Ivanov died on May 31, according to his close friend, volunteer Kateryna Pylypchuk.  JOIN US ON TELEGRAM Follow our coverage of the war on the @Kyivpost_official . Known online by his X handle @radykalniy , Ivanov had built a following for his sharp wartime humor, reflections from the front and creative work.