They alledge to have shot one down and then they and the Russians have analysed it and found it was a Us drone.
They may have shot down a regular us drone and equated the two.
But is it possible that they have back engineered a UFO to that degree? By now possibly? Anything that can fly outside the atmosphere must have some kind anti gravity drive. You need air to generate lift and if you are using a propellant you need to piggy back it on rockets, just like the shuttle, satellites and bransons virgin galactic.
Magnetic energy? ECM ? Never heard of magnetic energy magnetic field but energy? How do you overcome the massive amount of friction generated by going at Mach 10?

Thing is though neither the Iranians or they guy who wrote the article will have read Hastings book