Not surprisingly, Russia would like to make it as hard as possible for Ukraine's allies to carry out such work.
Washington is being tight lipped about what has happened to the drone.
After the collision, US remote pilots were forced to bring it down in the Black Sea. ไทเกอ711
Gen Ryder would not say where it landed or whether the Russian navy was trying to recover it.
Audio recordings circulating on social media seem to indicate some kind of Russian recovery operation was under way. But this has not been confirmed.
Clearly, Washington would not be happy if such sensitive surveillance technology fell into Russian hands.