So, now Arestovich already become credible source for you?

Ukraine is trying to produce as much military equipment as they can as they don't want depend onsupply from West fully. Like in cases that they had when supply from USA stopped. Drones, some missiles, Bohdana howitzers and etc is produced in Ukraine. And Ukraine made drones and missiles are being used to hit targets in Russia as most West counntries don't allow to use their weapons to hit targets outside  Ukraine.
I guess that even if complete blackout will happen, it won't stop Ukraine's military industry. They would solutions how not to stop it, like for example switching to diesel generators.