Ukraine is fast developing a foolproof way to beat the electronic jamming of attack drones on the battlefield – its very own home-produced fibre-optic controlled hexacopter drone.In a war dominated by drones, it may seem counter-intuitive to put one on a leash, but the Chinese have been doing just that for some time and sharing their tech with Russia.This is why Russia has already been fielding the technology in its so-called special military operation in Ukraine.