Russia's F-15 Killer: Why America (and the World) Fears the Su-27

It was the USSR’s best plane—and it still packs one heck of a punch. 

Russia's F-15 Killer: Why America (and the World) Fears the Su-27 Flanker

Russian jet-U.S. drone collision: Moscow will try to retrieve drone wreckage in Black Sea after Pentagon blames Russia for crash - CBS News

Why did the Soviet military choose to use both the MiG-29 and the Su-27, when they were very similar in design? - Quora

Russian Su-27 performed safe but unprofessional intercept of U.S. Navy P-8 Poseidon, U.S. officials say - The Aviation Geek Club

F-16s would give Ukraine an advantage, but risk escalation, News

The combat statistics for all the aircraft currently in use

Japanese Fighters Intercept Russian Nuclear-Capable Strike Attack Aircraft – The Diplomat

Sukhoi T-50 PAK FA - A Copy of the US F-22?

Sukhoi Su-27 - Wikipedia

Scary Stuff: Watch a Russian Su-27 Fighter and U.S. F-15 Get A Little Close