I read this article about a Russian (pic) who is being tried in Ukraine for a war crime: executing a Ukrainian soldier when he should have been taken as a prisoner of war (under the Geneva Convention, which Russia and Ukraine have both signed up to)

Apparently Russian soldiers are being told to not take prisoners, but to kill them instead, which is against the Geneva Convention.

https://www.bbc.co.uk/news/articles/cp8ylx534j0o