FILE PHOTO: A Russian Beriev A-50 airborne early warning and control training aircraft flies over Red Square during a rehearsal for the Victory Day military parade in Moscow, Russia May 7, 2019. Alexander Zemlianichenko/Pool via REUTERS
FILE PHOTO: A Russian Beriev A-50 airborne early warning and control training aircraft flies over Red Square during a rehearsal for the Victory Day military parade in Moscow, Russia May 7, 2019. Alexander Zemlianichenko/Pool via REUTERS