All wars are psychological wars.
Human beings are the most pro-social creatures on the planet, most of the time.
So how do we end up in wars (the most antisocial behavior on Earth) with each other?
Our so-called "leaders" have to play tricks on the collective human consciousness to whip us in to shape for war.
They have to convince us that it's "for the greater good." There is an "other" who will destroy us if we don't attack them first.
How has any war ever benefited humanity, exactly?
Who is this "other" that wants to destroy us?
The answer is war has never benefited humanity, and there is no other. It's just us.
We would never (or at least rarely) go to war with each other if we didn't let a small group of psychopathic "elites" deceive us into thinking war is necessary.
We have to regain control of our mind space from propaganda and lies. We have to fight the intellectual falsehoods that lead us into worthless violence.
We have to destroy these evil ideas before they destroy us.