Here’s George Orwell on war:
War damages the fabric of civilization not by the destruction it causes […], nor even by the slaughter of human beings, but by stimulating hatred and dishonesty. By shooting at your enemy you are not in the deepest sense wronging him. But by hating him, by inventing lies about him and bringing children up to believe them, by clamouring for unjust peace terms which make further wars inevitable, you are striking not at one perishable generation, but at humanity itself.
This is from an essay published on August 4, 1944. I leave it to you to judge if these words are still relevant.