As long as we have militarized capitalism, which is what we have, and men and women are willing to invade and attack other people in other countries, we will have war. The US has been at war nearly continually since it began as small colonies, either right here warring against Natives, or elsewhere in the world, and I do mean continually.   So has most of Europe. There have been very few years of peace.  This is on us, too, and the sad thing is, there isn't much we can do about it, because it's the human animal.   All of it is.   The powerful want power.  They burn the midnight oil conspiring how they can get control of anything and everything.  The average human isn't either smart enough or good enough to see through it, and ordinary people get duped generation after generation after generation.   Plenty of people have written about how wars are ALWAYS for the rich, most especially Major General Smedley Butler.  "War is a Racket" https://www.ratical.org/ratville/CAH/warisaracket.html