Russia-Ukraine war: 540 children killed in Ukraine for the 18 months of war:

https://reliefweb.int/report/ukraine/ukraine-child-casualties-ukraine-rise-7-over-summer-over-540-children-killed-18-months-war

Israel-Gaza war: 4,000 children killed in Gaza in a month:

https://www.aljazeera.com/news/2023/11/5/true-massacre-gaza-children-death-toll-crosses-4000-as-raids-intensify

Remember, kids, it's a war crime only if Russia does it. Israel has the most moral army in the world and so on...