Comment by kaibee

> Ukraine is literally doing it with rubberbands.

I'm under the impression that the supply-chain for Ukrainian drones basically leads to China in the same way that it does for Russia. For a "small" regional conflict, this isn't a problem to Ukraine because there's no way China could or would restrict supply of their cheap drones. But for a large-scale conflict, it would be a problem for the US to not be able to source drone motors by the 10,000's.