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... The U.S. military's declassified 42-second color footage shows a Russian Su-27 approaching the back of the MQ-9 Reaper drone and releasing fuel as it passes, the Pentagon said. Dumping the fuel appeared to be aimed at blinding the drone's optical instruments to drive it from the area.

On a second approach, either the same jet or another Russian fighter that had been shadowing the MQ-9 struck the drone's propeller, damaging a blade, according to the U.S. military, which said it then ditched the unmanned aircraft in the sea.

The video excerpt released by the Pentagon does not show events before or after the apparent fuel-dumping confrontation and does not show the Russian warplane striking the drone.

Russia said its fighters didn't strike the drone and claimed the unmanned aerial vehicle went down after making a sharp maneuver. ...