According to the European Command of the US Armed Forces, a Russian Su-27 fighter in the sky collided with an American unmanned aerial vehicle over the Black Sea.
"At about 07:03 Central European Time (09:03 Moscow Time), one of the [two] Russian Su-27 aircraft hit the propeller of our MQ-9 aircraft, which led to its crash in international waters [of the Black Sea]", — the US military said in a statement.