[1/3] Beriev A-50 early warning aircraft flies during a rehearsal for the Victory Day parade, which marks the anniversary of the victory over Nazi Germany in World War Two, near the Moscow International Business Centre, also known as "Moskva-City", in Moscow, Russia May 7, 2019. REUTERS/Evgenia Novozhenina Feb 27 (Reuters) - Belarusian anti-government activists have claimed responsibility for what they said was a drone attack on a Russian A-50 surveillance aircraft at an airfield near the Belarus capital of Minsk on Sunday. "Those were drones. The participants of the operation are Belarusian," Aliaksandr Azarov, leader of Belarusian anti-government organization BYPOL,...