The Shafaqh project came to a halt when the U.S put enough pressure on the Russians to end their cooperation in the project. Shafagh itself was only a light fighter /Advance Jet trainer, nothing game changing. Iran could have spent a $100 billion on the IRIAF but at the end of the day, it still would not be a match for the USAF and IAF. Iran has managed to build a formidable Missile and Drone force that has proven its worth against the world's sole superpower while having one of the smallest Defense budgets in all of West Asia!