Talking about benefits, I would say war never brings benefits.
War always brings destruction to both sides. And if I say who benefited from this war then I would say Russia. moreover, in all other fields, all the countries of the world are facing economic crisis. I think this situation is due to the introduction of various restrictions on oil and gas.
When there happens war, each and everyone in the world suffers some sort of economic difficulty. This happens as a result of country's having dependency over each other for some needs. Apart all this the big profit makers or the benefiting one's during the war were the war equipment selling countries. When war takes place big business takes place.
Humanely, war will only make everyone miserable, especially the people. but behind the war, of course, there is a separate mission from the rulers who certainly want their goals to be achieved with sacrifices that have been calculated beforehand, so that if their goals are achieved, then they will benefit, and of course they also make cooperation with other countries to supply weapons and other equipment, for example .