From the U.S. Department of Defense:
"Two Russian Su-27 aircraft conducted an unsafe and unprofessional intercept with a U.S. Air Force intelligence, surveillance, and reconnaissance unmanned MQ-9 aircraft operating within international airspace over the Black Sea on March 14, 2023. Russian Su-27s dumped fuel upon and struck the propeller of the MQ-9, causing U.S. forces to have to bring the MQ-9 down in international waters. (U.S. Air Force video)
(Editor's Note: This declassified video has been edited for length, however, the events are depicted in sequential order.)"
