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. 

Su-27 Flanker: The Story of Russia's F-15 Killer

Su-27 Flanker: The Story of Russia's F-15 Killer

Russian Su-27 Forces Away NATO F-15 After It Approaches Of The Russian Federation Plane.

Russian fighter jet fires flares at US drone in near miss over Syria, US military

How Russia's Su-57 Felon Jets Compare to U.S. F-35, F-22 Fighters

McDonnell Douglas F-15E Strike Eagle - Wikipedia

Russian Su-27 Forces Away NATO F-15 After It Approaches Of The Russian Federation Plane.

Su-27 and F-15 side by side : r/aviation

The combat statistics for all the aircraft currently in use

Origins- Evolution of the Su-27 into an F-15 killer (Part-2) – Defencyclopedia

Russian fighter jet flies five feet from US aircraft

US releases footage of Russian fighter jets 'harassing' US drones over Syria, US military

Why did Sukhoi only make the Su-27 as a rival to the F-15? Is there a Sukhoi rival to the F-16? - Quora