China’s escalating conflict with the US over trade is now extending to the drones that have become a vital part of Ukraine’s defense.

We don’t even hear them anymore,” Zhenya chuckles from under first-person-view (FPV) goggles branded with the U.S. company “Fat Shark.” Zhenya and his co-developer for DragoDrones, or DCU, Maksym, are testing a stack of small FPV drones in a field in Kharkiv Oblast.

China is reportedly making drones for Russia instead, according to multiple intelligence officials, but China has denied any weapons manufacturing for either side of the Russia-Ukraine conflict.