"The Russians had lost an estimated 3,000 tanks in the previous year, along with 9,000 armored vehicles, 13,000 artillery systems, and more than 400 air-defense systems, Cavoli said in written testimony. The main weapon that the Ukrainians had used to inflict this damage was the suicide drone, which costs about $400 to makeâŠâŠâŠâŠâŠâŠ.âItâs Ukrainian housewives,â Papperger (CEO Rheinmetall, Germanyâs biggest arms manufacturer) said of their factories. âThey have 3-D printers in the kitchen, and they produce parts for drones,â he said. âThis is not innovation.â