A statue of KGB founder Felix Dzerzhinsky was torn down in 1991
More from this series
Martin Sixsmith gets under the skin of the fastest growing and arguably most politically influential secret service in the world.
When the KGB was rebranded and relaunched in the early 90s, it was assumed this now creaking engine of state authority would wilt along with the system it represented.
But with a former KGB director taking over in the Kremlin, some say its successor has become just as potent a force.
President Vladimir Putin has given unprecedented positions of power to former secret service colleagues.
Programme One investigates the evolution of this secretive organisation following the collapse of the Soviet Union - its allegedly growing links with Russian organised crime, and its transformation under the guiding hand of President Putin.
It also looks at the role of the FSB's "special operations" in Chechnya.