I know that Ukraine relies a lot on DJI drones, particularly for reconnaissance, and I am curious if this is a security risk. DJI is headquartered in China, and China and Russia have good relations, so is it possible that Russia makes a request to China that they brick Ukraine’s drones, or backdoor them?
You’re extremely overestimating the relationship between China and Russia. The risk of backdoors in foreign equipment is everpesent, but also extremely unlikely for a consumer device.