My parents are going to visit a high-tension zone in another country this weekend. I'm going to tell my grandma to stop talking about war while they're away.
Why would she talk about war while they are in such a dangerous place?
She has no idea what current events are in the world.
Yeah, If I were you, I would tell her not to talk about it as well. Wanting to stay away from an uncomfortable topic is fine. I hope everything goes okay with your parents.
My parents don't fear death. They went there because they are warriors and I am proud of them.
That is your parents' choice. If you don't want to talk about it, you don't have to.