Well, without going to deep down the rabbit hole, I think I'll put it like this:
At best, wars are primarily a tool of the bankers and the international elite in a path towards control of all countries economic and physical resources. They finance and play both sides, and no matter the victor, they win. This is essentially the John Perkins position.
Even John Perkins claims there is no "grand conspiracy" though... and I would simply claim otherwise. Of course I've heard all the common retorts. "It could never be kept secret." "It's all incompetence, not malice." (hanlons fallacy) "It's just self-interest manifesting nastily." and so on.
Look, after the war I realized I had been lied to about so much, I sat down and decided to do what I call my "Descartes reset". Essentially, it consists of two parts. One, if I were to start fresh as if I knew nothing, and then evaluate the inductive and deductive evidence, if my past conclusions were correct I should arrive at them again. (they were't, and I didn't). Two, you must decide what you desire the most. The truth, no matter how ugly? Or a beautiful lie? I chose truth.
I won't get into the details right now, but suffice it to say I walked away believing there is indeed a "grand conspiracy". Of course that doesn't mean the other points of view aren't true at the same time, because they aren't mutually exclusive. If anything, the self-interested and the incompetent creates a nice cover for the abuse of the compartmentalization of black operations. There are often competing factions within as well, that sometimes align in purpose and sometimes don't. I still update and check my information and model as well. It's a continuous process mostly gained by gleaming bits and peaces of information from just straight up voraciously reading the best books related to the subject I could get my hands on.
That said, there are three primary sources that have a hefty academic background I used to pivot to other things. Carroll Quigley, Peter Dale Scott, and Antony C. Sutton. A third that was less academic and more experience based was Fletcher Prouty.
There are many other sources that have interesting things to say, but aren't as unimpeachable as the others. For this, a mainstream board, if you are really interested, I will just leave it at those four as a good start to pry open the very obsfuscated subject just a bit.
Bonus: https://youtu.be/YUYCBfmIcHM?t=1380