> And does Russia have any F-16s?

Not publically but I would assume they've had access to Venezuela's F-16A/Bs, though those are probably in fairly poor condition by now and are nowhere representative of current avionics capabilities.

After the close of the Vietnam war the USSR, and lesserly Poland and Czechoslovakia, extensively tested US-supplied ex-VNAF ( southern ) aircraft such as the F-5E but since then such opportunities have been very limited.

It's very likely. The US has sold F-16s extensively.

I don't believe so, or at least I've never heard about Russian F-16s. Iran still flies some old F-14s though.

The USAF seems to be pretty strict about not allowing more modern fighters to end up in private hands. There are a number of F-86s, F-104s, F-5s and I believe one F-4 Phantom still flying around the US in the hands of private collectors and air museums but nothing newer like F-14s, F-15s, F-16s or F-18s.

Edit: While I've never heard of any F-16s in Russia I'm sure the Russians have had plenty of time inspecting and probably even flying F-16s, it was a very widely exported plane.

Does Russia have an equivalent of ITAR? If not, that could partly explain why US aircraft are less commonly sold.

https://en.m.wikipedia.org/wiki/International_Traffic_in_Arm...

Never mind that Iran is still flying F-14s...