As is no doubt obvious by now, I will continue to insist that war, whether international or civil, is almost always ultimately fought over ideology and not because the factions seek to gain financially/economically. The few exceptions are when hordes of barbarians just want to pillage as a way of life.
I don't believe in evolution via genetic mutation and prefer something along the lines of conscious morphic fields driving change. However, there is no doubt that the results of what the morphic fields produce are put to the survival of the fittest test once they're here in this dimension.
Humanity evolves by putting its ideologies, it's ways of life, to the fitness test. Constantly. That is a good thing. It keeps it real and it keeps it as efficient and value laden as possible. Thus war is the natural state of humanity. The bleeding hearts who's sensibilities are so terribly offended by that reality are just another ideology that is competing and they will always resort to war themselves, or be crushed out. We are always killing to achieve peace. I don't see a problem with that because I accept it. There have always been prophets and gurus who say it can be otherwise, but they always fail; often, themselves, killed. Railing over the injustice and inhumanity of that is senseless. It's like complaining about gravity when you trip, fall down and break your knee. The spiritual aspect is to make yourself strong (full of personal power) so you don't fall down for as long as you can; knowing that one day you will fall and it may be your final act - so you seek to so it with acceptance and grace. That's where I'm coming from. I make sense to me and that's all that counts. I don't have a Christ complex. The golden rule is great and makes life a better experience, but, hey, those barbarians are out there; sometimes in sheeps' clothing.
Right now, in capitalist systems there has arisen competing ideologies; socialism being a major one of those. It's a morphic mindset that's always been around, but is being highly energized currently. They try to wear sheeps' clothing. I say they are barbarians looking to pillage. Historically, socialists have always been willing to kill, often in great numbers, to achieve dominance of their ideology. Any socialist who says otherwise is either deluded or lying.
To be fair, I don't not comprehend what most people in forums like this are calling "spirituality" It seems to me that it is some form of agape; a communal brotherly love/mutual support thing. Like some kind of vestigial appendage from Christianity. IMO, that is an arbitrary definition that is largely limited to the western world (which is expected if it's a vestigial Christian outlook). The mighty Apache warrior Geronimo was considered a highly spiritual medicine man by his clan. He is said to have demonstrated great displays of spiritual power. Yet he was a warrior through and through. I have already mentioned Krishna's advice to Arjuna elsewhere (to kill his usurping relatives in battle and claim the throne). There are many more examples of spiritual warriors world over. IMO, people that have this emphasis on agape being the highest evidence of spiritual attainment are going to be frustrated because they have made a false assumption about a definition.