In the evolving landscape of modern warfare, both Ukraine and Russia are deploying fibre-optic-controlled drones that are impervious to electronic interference – but can the current anti-drone techniques be enough to stop them?The first-person view (FPV) drones are next level and are controlled by a fibre-optic cable rather than a radio signal and they also feed back crystal-clear imagery. Russia is using them in the thousands, so what – if anything – can be done to halt them?