In war no country benefits despite the attack or winning from the opponent,
Pardon! I do disagree with your statement here that in war non of the belligerent country benefits in anyway in the way. Let use the case of the WW2 between the USA and the Japanese, dis you know that part of the world power the USA wield today was due to the resultant aggression of the atomic bombs dropped in the cities of Hiroshima and Nagasaki in 1945. The effect of such act paid the USA an influence of a world power among other nations of the world. So doesn't that sounds like a benefit?