I wonder which SOC they are using.

The article doesn’t mention the details, it just says:

> Ukraine Defense Drones makes most of its own components, and European suppliers fill most of the gaps.

Anyway I guess they can be STmicro electronics, NXP, Infineon…

I wonder from which foundries they used for those very SOCs.

Those manufacturers have their foundries in Europe, France, Italy, Germany, etc...

Maybe because they are "robust" chips, probably far away from the best silicon process, and when I mean best, I mean 'with the smallest features.'

Yes but you don’t need 2/3nm chip in a drone! STmicro is a global leader in many sectors for example, like automotive chips, probably Ukraine is using those chips.

Do they have RISC-V CPUs, or are they just arm slaves?

I wonder what is the silicon process for the SOC in those drones. Really.