Explained: The Tensions That Lie Behind Russia ‘Downing’ A US Spy Drone
Several times before the collision, two Russian fighter jets dumped fuel on the MQ-9, possibly trying to blind or damage the drone, the US military said, adding that they flew in front of the American aircraft in unsafe moves.
Article source: https://www.huffingtonpost.co.uk/entry/russian-fighter-jet-downs-a-us-drone-over-the-black-sea_uk_6410c0f5e4b01ea5cd8ac9e1