Czech manufacturers of computer numerical controlled (CNC) machines have been exporting their products to the Russian market for decades. Even in 2020 and 2021, more than a tenth of Czech CNC machines, worth over a billion crowns, were sent to Russia. These machines often ended up being put to use by local arms and industrial companies, despite the ban on importing dual-use goods for military purposes. Investigace.cz, in collaboration with Russian exile editorial team The Insider, has traced the long-standing relationships between Czech producers—who continue to export machinery to Russia—and their Russian partners.