Russia said on Wednesday that it would try to retrieve the remnants of a US drone that crashed into the Black Sea.
The large MQ-9 Reaper drone plunged into the water on Tuesday.
The US said it brought down the damaged drone after it became "unflyable" when a Russian jet clipped its propeller - but Moscow has denied these claims.
Speaking on state television, Russian security council secretary Nikolai Patrushev confirmed Moscow was attempting to find the aircraft.
"I don't know whether we'll be able to retrieve it or not but it has to be done," Mr Patrushev said. sexygame66