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.

Russia's Sukhoi Su-57 stealth fighter made a show at China’s International Aviation and Aerospace Exhibition, where Russian test pilot Sergey Bogdan praised its capabilities, calling it superior to any aircraft,

Here are all the details you need to know about the two fighter jets that are trying to put a competition against mighty the US at the world stage.