Mossad are embedded so deep in the Iranian regime that I wouldn't be surprised if their people end up in the leadership positions
I doubt it. Most were culled a few months ago. But we'll see what happens.
Go read the book "The Thirteenth Tribe".
There's a narrative that the Khazarians in the Khazarian Empire (Modern Ukraine) were satanic cannibals. They preyed on eastern and western traders, drugged them, murdered and ate them, and even assumed their identities. Russia told them to choose a religion. They chose Judaism. But they continued with the satanic BS. So Russia kicked them out of that region. Apparently they've had a more than thousand year old grudge against the Russians.
Israel was not their original homeland. The Ukraine region was - I guess.
Yes, there are many Khazarian Russians in Israel. That's part of the problem. Too bad their 1917 Russian Revolution was a success. I doubt Putin would ever take care of them as he should.
https://en.wikipedia.org/wiki/The_Thirteenth_Tribe