Why do people and governments get into the business of other nations ?
Why do people try to force change upon others
They are of the perspective that advancing self at the expense of others is a good and valuable thing. They value self. They do not value other. And, very likely they value the diminishment of other, because if other is diminished, then other will be less able to diminish self.
With this sort of perspective, with these sorts of values...it's completely consistent and logical and kill, maim and destroy others, to impose your will upon them, and kill any who do not conform to your desires.
Why not let them be until they ask for help
Because they don't like beer. Why would they drink it?

