Commentary If the advertised price and performance are realized—a huge if—Russia may have a new bargain-price 5th generation fighter that could provide both commercial and combat competition for the Lockheed Martin F-35. A product of the Sukhoi Corporation, which makes Russia’s only 5th generation fighter, the twin-turbofan Su-57, NATO code name Felon, the new fighter was revealed with much fanfare at the July 20-25 Moscow Airshow (MAKS) as the single engine Su-75 Checkmate.  Sukhoi’s 4th generation large twin-turbofan Su-27, Su-30, and its more recent 4+ generation Su-35, similar to but more capable than the Boeing F-15C and F-15E, have been successful commercially and have been purchased and copied by China. While there has been some previous mention in the Russian press for this program, the Su-75’s emergence late last week being towed under an obscuring cover at MAKS, was a surprise revelation. Adding up the Russian press reports, statements by …