While I have never combined the activities, I do have some experience both flying drones and using thermite. The video showing a drone pouring a stream of molten metal down onto a line of trees looked straightforward enough that I could easily imagine how it might have been done. Thermite is not a complicated technology!
The geneva conventions apply only for wounded and sick on land(geneva convention I), wounded and sick on sea(geneva convention II), captured soldiers(geneva convention III) and at last civilians.
The Hague Conventions on the other hand limit what weapons can be used. in the 1899 article IV may be violated.
Incendiaries are not banned for military targets. Even white phosphorus is only “restricted” such that you need to take precautions regarding collateral damage. And GC specifically doesn’t regulate arms it mainly deals with prisoners and such.
In the most recent strike on Lviv's historic center to which you are referring, 7 people were killed, including nearly an entire family of 5 (and wounding 35 others):
Of the five members of her family, only Yaroslav, Daryna’s father, is now alive, a lone survivor of a Russian strike on their home in the western Ukrainian city of Lviv on Wednesday.
According to eyewitnesses, Daryna, 18, her sisters Yaryna, 21, and Emilia, 7, and their 43-year-old mother Yevhenia were killed while sheltering in the staircase of their residential building, the Ukrainian emergency services said.
Curiously, you are choosing not only to omit this information, but to depict the result of the strike as something entirely different from what it was.
As much as this is horrifying no matter from which point of view one looks at it, also because many of the Russian soldiers were either lured or coerced into fighting a war they didn't want against their close relatives, let's not forget that it all started with an invasion. Putin wanted it and he is responsible with all those who support him for all consequences.
