This is a lesson the US has yet to learn, and its military drones are really expensive. Ukraine learned it by necessity, and now it's building millions of drones annually.
One problem the US has had in its Iran adventure is that they're shooting down $30K drones with million dollar missiles, often several of them. Now the missile stockpiles have been depleted by 30% to 50%, depending on missile type, and they're not all that quick to replace.
I don't understand what you mean here.
Aren't wars fought over natural resources or the political power over natural resources.
Obviously people sometimes miscalculate but in principle I mean.
Not really. They’re fought over fear of the future, desire for control and power over other people. “It’s us or them” captures one of the core calculi of war. It’s not rational, it’s just an expression of evolutionary imperatives.