Russia's fighter pilots are 'no longer so impudent' after Ukraine's kill streak, says air force

• Russian A-50 planes have been avoiding the airspace over the Sea of Azov for the past six days.
• Ukraine's air defenses downed 10 Russian planes in 10 days in a recent kill streak.
• Russia's losses could be linked to compromised avionics systems, the Kyiv Post reported.

Russian A-50 planes, crucial for surveillance and the coordination of its air power, have been avoiding the airspace over the Sea of Azov for the past six days, RBC-Ukraine reports.