TOPSHOT - Bohdan Levchykov, a 15-year-old teenager, walks by a school damaged by shelling in Balakliya, on October 13, 2025. With his bumfluff moustache and baseball cap, Bohdan Levchykov would be your typical teenager anywhere if he didn't embody what has happened to a generation of young Ukrainians after nearly four years of war. Researchers for the WHO who questioned 24,000 young Ukrainians from 11 to 17 at the end of 2023 found a "deterioration in the psychological wellbeing" and "significant" decrease in the happiness they felt. (Photo by OLEKSII FILIPPOV / AFP via Getty Images)