Loitering suicide drones is some dark dark future shit. Im glad drones dont have guns yet. Disgusting world where we'd have such mechanized air orne slaughter.
Because they aren't. A direct war between the US and Russia would rapidly escalate to nuclear, which is a kind of war that can't be won because of mutual destruction.
They could fight each other indirectly in Ukraine, but I wouldn't expect any direct confrontation by their regular armies.