>>10659751 (PB)
"Russia" is generalization that make most assertions meaningless.. RU like the US has competing intelligence agencies.
FSB is mostly internal, cointel.
SVR is (mostly) foreign intelligence service. Successor to KGB and report directly to president Putin.
FSO is russian protective service, like our secret service.
GRU is main directorate of the general staff of the Russian army. like MI or NSA.