I am amazed of the lifting power of those little drones.A bit dated but interesting never-the-less:
Ukraine is fielding thousands of small, locally assembled kamikaze drones to attack Russian tanks, artillery and trenches. But unlike most quadcopters, they require a high level of skill to operate. Ukrainian drone makers Escadrone explain how they designed, built and fielded a game-changing weapon.www.forbes.com
If this is true, the fur is about to fly in Russia:
Looks like Ukrainians are cutting railway coming form Crimea, no need to take out (yet) Kerch Bridge
Cutting railway lines is something normally done before a major attack, to try to isolate the combat area, hindering supplies and reinforcements. I wonder if what has gone before is but decoys or faints and the major attack has yet to be launched.