Some time ago I have found in a book bought at a charity shop a father's advice to his son. It was something about not getting involved in someone else's wars. It was a book about Che Guevara. The handwriting was at least a couple of decades old. I have been thinking about the father and his son many times since. It makes me always very sad.
But now I hope that your little brother going there just for holiday. And I wish him a great one. โค๏ธ
Good to have such adventurous brother though.