War is a failure of humans to achieve their goals by other civilized means. Of course there are two sides in every conflict and there are some ass holes out there who need to be rapped up side their heads.
There are cases when war is inevitable and if you don't fight, you're going to be swallowed or maybe you'll witness the wholesale slaughter of a group of innocent people. So there are necessary wars and then there are total bullshit wars started by characters who either want to rule the world, don't respect their neighbors, don't accept "no" for an answer and basically want to have their way and/or think the sacrifice of their soldiers is worth the political objective. And at the lowest most heinous level, besides genocide, war is conducted as big business for profit.
From a U.S. perspective and as a veteran, I've supported every war the U.S. has been involved in accept the current war/occupation which is total bullshit for perceived political advantage and profit. Until Iraq, Vietnam (50 years ago) was the war to ponder. I realize that while Vietnam started with the goal of containing world wide communism, in time it turned into a bogged down losing proposition and the time to get out of there became long overdue.
Just curious, is this your view or just an interesting quote you threw up?
Bottom line War is a failure of the higher aspirations humans are supposed to be striving for. It scars people and countries for life however as a realist, "peace" is the exception, not the rule. Historically, people solve their differences by killing each other. It's nothing to be proud of.