Its a non started... seriously, even if they are forcing captured pilots to train them, they will be obliterated by truly trained pilots in no time.. these are PR more than real threats. It takes years to training to become a top pilot and most of the arab world’s air forces are not remotely considered “TOP PILOTS”... They ever tried to violate Russian or NATO airspace they would be downed before they likely even knew the enemy had them in their sites.
It’s easy to fly fighters. You just need a quick hour heads up session from a trained pilot. Didn’t you see that movie “Independence Day”?