Let me throw a monkey wrench into the “positive” side of Russia dropping a person’ dual citizenship if they lived outside the USSR since 1992.
What better way for a Soviet/Russian spy to become a sole national citizen of the US instead of having a dual citizenship with Russia. That would take FBI surveillance raison d’etres off the operational table.
While this is a little far-fetched, I’ve learned long ago that if you think someone/country won’t do something, they will.
Russia doesn’t give a damned about Soviet/Russian Jews who live abroad because they no longer pose any real intelligence threat against them. However, it would give cover to real Russian operatives because it would make it look like Mother Russia didn’t trust them.
Like James Bond, “Never Say Never” when it comes to the communists/Russians/Islamists and what they won’t do as versus what they will do.
We never thought that the Japanese would attack Hawaii despite the signs, nor that Kruschchev would put nuclear missiles in Cuba. Surprise, surprise.
I was thinking the opposite, what better way for a Western spy to gain access to the Russian Federation than to show up with an old expired Soviet passport and claim Russian citizenship?