The Sukhoi Su-34 jet fighter-bomber of Russian Air Force performs its demonstration flight at MAKS-2015 airshow near Zhukovsky, Moscow Region, Russia.
A Russian Su-34 jet.
  • Ukrainian officials told AP they destroyed six planes at the Morozovsk military airbase. 
  • Eight more aircraft were damaged, and 20 service personnel were killed or injured, they said.
  • Su-34 fighter-bombers and Su-27 fighters are known to be stationed at the base.

Ukraine said it destroyed at least six Russian fighter jets and damaged eight more in what could be one of the biggest drone attacks of the war, according to reports by multiple outlets.