Dear Steven M.,
The NKVD was dissolved in 1946, when Oswald was still a lad.
The KGB came into existence in 1954.
I took the liberty of cleaning up your syntax, grammar and vocabulary a bit. I hope you don't mind.
-- MWT 
What "syntax, grammar and vocabulary" did you clean up?
Correcting my NKVD reference is none of those.
Since we're enlightening each other, I'll return the favor. Here's a word for you to learn.
Insufferable
[inˈsəf(ə)rəb(ə)l]
ADJECTIVE
too extreme to bear; intolerable.