First of all I’m talking about civilians and your experience is probably at least 15 years old.
I left the forces in 2009. Right before I left ( I don’t know how) but we let a former spetnaz into the Canadian airforce. He lasted 6 weeks before they deemed him unfit for service, couldn’t learn the basics. His english was good, but just lacked overall ability.
The bottom line is, lots of countries know who did this, there’s no point in trying to cover it up. Considering where you’re from, I have to go with the motion that whatever you say is heavily biased.