> Nobody sane would believe that invading a country promotes regional stability.

Then you should read about some of the biggest influencers in US foreign policy since WW2. There’s one guy whose entire career was spent essentially trying to convince the president / military brass to bomb enemies into submission: https://en.wikipedia.org/wiki/Curtis_LeMay

I’m sure you’ve also heard of Henry Kissinger.

Anyway, pretty strong history of US political figures dehumanizing foreign populations, justified by some western moral superiority. Direct through line to the Bush presidency (last of the neoconservatives).