The Sukhoi Su-57 completed combat operations over Ukraine

The Russian Air Force has reportedly used four of its new Sukhoi Su-57, fifth-generation fighter jets, to carry out attacks against Ukrainian air defense system

Russia's Su-57 outshines US fifth-generation fighters, says expert - Military & Defense - TASS

Sukhoi Su-57 - Wikipedia

Russia Used Su-57s Over Ukraine, UK Ministry Of Defense Says

Russia May Develop Naval Variant of Su-57 Fighter: Report

Sukhoi Su-57 Felon Fighter Jet, Russia

UK MOD claims Russia using Su-57 in Ukraine conflict

Sukhoi Su-57 Felon: Russia's Stealth Fighter Looks Destined to Fail

Fifth-Gen Fighter Jets Made for Ukraine War, Russia's Su-57 Is Missing

Russia Completes Latest Su-57 Felon Stealth Fighter Deliveries, NATO Probably Indifferent - autoevolution

Is Russia's New Su-57 Stealth Fighter Going to War in Ukraine? - 19FortyFive

Sukhoi Su-57 Felon Fighter Jet, Russia