You'd need a breakthrough in battery (or other form of energy) technology - eg. high range + cheap as hell ...I don't think/hope China will be a world leader on

You'd need a breakthrough in battery (or other form of energy) technology - eg. high range + cheap as hell ...I don't think/hope China will be a world leader on this anytime soon :) Ofc you can low-tech your way into it by just delivering drones in shipping containers and hiding them close to potential targets... Also, cheap ass drones + bio-warfare would make a killer combo, if you knew you won't get nuked if you implement it...