shortly after you develop a new tool someone comes along and finds a solution to it;

Via: Telegraph:

Justin Crump, the chief executive of the strategic intelligence company Sibylline, said: “Fibre optic drones were developed by Russia to counter the problems of effective EW.

“People think of a drone at the end of a tether pulling off a big spool of wire, but the cable is so lightweight that the drone carries it and lays it behind it, meaning it doesn’t get snagged or caught or provide resistance to travel.”

The presence of a physical cable between the drone and its pilot means that the EW jammers are unable to scramble the usual radio frequencies used to guide it.

Ihor Yu, a Ukrainian drone pilot, said: “Although the technology is not new, it is highly effective in modern warfare, particularly against active enemy electronic countermeasures.

“Despite some operational challenges, these drones are essential for accomplishing specialised tasks successfully.”

…

While the cable unspools as the drone moves to avoid tension, the fibre optic wires can easily break if they are tangled around obstacles in between the pilot and his final target.

Mr Crump said: “This control system has been comparatively rare globally due to the inherent drawbacks, but will likely receive increased attention in terms of both exploitation and how to counter the enduring threat posed.”..........https://www.cryptogon.com/?p=71797

Ukrainian soldiers defending against these fibre optic drones have said they are susceptible to small arms fire because they are not as manoeuvrable as wireless UAVs.