On the top floor of a building somewhere in Ukraine is a drone workshop.Inside is a chaotic workbench covered in logic boards, antennas, batteries, augmented reality headsets, and rotor blades. On one end of the room is a makeshift photo studio—a jet-black quadcopter drone sits on a long white sheet, waiting for its close-up.This particular workshop’s Geppetto is Yvan. He grins as he shows off his creations, flittering around with a lit cigarette in his mouth, dangling ash, grabbing different mo...