War in general can be devastating in terms of the economic sector, that's for sure, there is a difference that wars occur in countries that have no effect on the world, most likely from a world economic perspective it doesn't matter.

It's a different story with superpowers like Russia, America, China, etc., if they go to war the negative effects are big enough, especially the economy, you certainly know Russia has the largest natural resources in the world, many need natural resources for other countries, bottom line: what you say is not wrong, but if it continues, the world will have another alternative to boost the economy, But not sure it will work, actually in this war, based on selfishness, the effect of selfishness can be fatal from all factors especially economics etc.