Can you imagine the furore if the Russkies were to put a brace of MiGs or Sukhois or White Swans into the London or Scottish FIRs and orbit over Aldermaston, Burghfield, Coulport or Porton Down?
BoJo would be straight over to the UNSC with a quivering lower lip to throw his rattle out of his pram. Somehow when it's the Israelis who are the aggressors: not a peep.
One does wonder why the Israelis took the risk with single engine aircraft for no particular dividend. As has been pointed out, the wreckage of a crashed F-35 would fetch a few Roubles or Yuan. The Iranians don't like Dollars nowadays, but Roubles and Yuan are much in demand as they are a much 'harder' currency than the debauched greenback.