The long and troubled history of Russia's prized Su-57 fighter jet appeared to take another turn for the worse in recent days when what should have been an opportunity for the Kremlin to flex some military muscle turned into global ridicule and embarrassment.

Moscow agrees to deliver the stealth warplanes to foreign countries for first time, while Russian security chief visits aviation event.

China displayed the J-35A fighter jet at its exhibition, the China International Aviation and Aerospace Show, on November 12. The J-35A is considered a modern, medium-sized, stealth, multi-purpose fighter jet.