I think it's just because the SVR is not a household brand in the same way that the CIA is and the KGB was (you never saw the KGB described that way either).
The CIA, KGB and MI5 are Hollywood staples; the SVR isn't, yet.
(In a similar way GCHQ is often described as "the UK's counterpart to the NSA" or words to that effect).
The CIA, KGB and MI5 are Hollywood staples; the SVR isn't, yet.
(In a similar way GCHQ is often described as "the UK's counterpart to the NSA" or words to that effect).