An interesting video out of the Donbass region shows a Ukrainian drone dropping improvised incendiary munitions, with great accuracy, into Russian-proxy trenches and bunkers.

The construction of the various petrol bombs differs in each clip. One is housed in a modified water bottle, but the chemical composition and catalyst to create fire isn't known by us.

While the use of recreational type drones modified to drop explosives has become a common tactic in conflict areas across the world, the delivery of fire bombs is relatively rare in recorded video. While high explosive munitions may have a more immediate and deadly effect, the incendiary munitions are able to permeate into bunker areas built to defeat point-detonating explosives.

The burning fuel can be useful in damaging and destroying communications equipment and other sensitive material and even has the potential to cook off an ammunition storage bunker with precise delivery. The smoke from the resulting targets also makes an aiming point of reference for Ukrainian artillery and mortars. At the very least, the use of these improvised, drone-delivered molotov cocktails compound the psychological offensive against the Russian-backed militants, as they now have another threat to worry about.