Or, rather, two tales of four agencies.
First two agencies are FBI and Russian Foreign Intelligence Office. The latter sent some spies to America. The spies were identified and monitored by FBI which recently released the materials. It turns out that in ten years of living in the US, this group of Russian spies did not do a single assignment. It has not collected any intelligence, has not contacted any American citizens (Anton Nosik says: "Not even a McDonalds worker, let alone a US government official"). Basically, they were just living in the US on the money of Russian taxpayers, waiting until their government comes up with some clever spying scheme.
Meanwhile, a group of FBI officers were busy monitoring these Russian "super-agents", also drawing salary of American taxpayers.
This would go on for another ten years if not for a diplomatic incident, in which the US government was forced to reveal the information about the Russian spies as a diplomatic move against the Russian government.
Anton Nosik summarizes: "Purpose is a concept very foreign to any bureaucracy. And Intelligence Service is [despite its name] the worst stage of bureaucratization for the brain."
(Sneaky Russian spies serving their country)
The second tale of two agencies is the tale of how a Florida trooper arrested a Florida police officer. See in this video: