Captured Russian soldier, Sgt. Vadim Shishimarin, 21, attends a court hearing on May 18, 2022 in Kyiv, Ukraine. Sgt. Shishimarin pleaded guilty to shooting a civilian on a bicycle in the village of Chupakhivka, Sumy Region, days after Russia's invasion of Ukraine on Feb. 24. The trial of the Russian soldier was the first that Ukraine has conducted since the invasion related to charges that could be considered war crimes. © Christopher Furlong/Getty Images Ukraine: Ensuring Fair Trial for War Captives Steep learning curve for Ukrainian justice system now tasked with prosecuting complex crimes under international humanitarian law. 2 Aug 22