Another thread raised a question in my mind and while doing some research, I came across something I didn't know before. Compare the US F-22 to the Russian SU-57
https://en.wikipedia.org/wiki/Lockheed_Martin_F-22_Raptor
https://en.wikipedia.org/wiki/Sukhoi_Su-57
And then compare the F-35 to the MIG-35
https://en.wikipedia.org/wiki/Lockheed_Martin_F-35_Lightning_II
https://en.wikipedia.org/wiki/Mikoyan_MiG-35
Yes, there are some basic variations but overall, these are the same "technologies." To the best of my knowledge, no copies of the US planes have fallen into the hands of the Russians (in the timeframe of the Russian jets development,) so reverse engineering would not apply. I don't think copying, from visual and flight characteristics, would be possible either, because materials and avionics play such a large part in the strengths of our planes, and the Russians would only be able to guess at it.
Two conclusions, 1) Bush/obozo/mcstain shared this info with the Russians to keep US dominance in check 2) the Q team shared this with Russia knowing that one day we would be allied with them against the deep state.
I like #2 a lot.
Alternate possibility: think organized competition. The puppeteers may intervene occasionally to keep it competitive.
We know China steals via internet, via blackmail, via bribes, not to mention threats to hostages (family in any area of their control) and constant surveillance of private companies. Before China, and in addition to China, Russia had done much the same, over a longer period of time.
Finally, don't underestimate engineers. Once you know something can be done, even if you didn't do it, it's easier for the next person to accomplish it. Like the 4-minute mile.