This is more than slightly interesting.

According to a Fox News release, FBI Director Kash Patel and Deputy FBI Director Dan Bongino found multiple files related to the FBI activity in the Trump-Russia collusion hoax, which included the classified annex to the John Durham investigation, inside burn bags in a secret room at the FBI building in Washington, DC.

The discovered Durham annex is now being declassified by the CIA and others and transferred to Senator Chuck Grassley’s staff who will release it to the public momentarily.  WATCH the Senate Select Committee on Intelligence (SSCI) response to these revelations, Chairman Tom Cotton, the guardian of the Intelligence Community, will likely demand special counsels’ be triggered in order to create the “ongoing investigation” defensive shield needed for his benefactors.

That’s how the silo system in DC rolls.

DC EXCLUSIVE: FBI Director Kash Patel found a trove of sensitive documents related to the origins of the Trump–Russia probe buried in multiple “burn bags” in a secret room inside the bureau, sources told Fox News Digital.

Sources told Fox News Digital that the “burn bag” system is used to destroy documents designated as classified or higher.
Sources told Fox News Digital that multiple burn bags were found and filled with thousands of documents.

Sources told Fox News Digital that one of the documents FBI officials found in a burn bag was the classified annex to former special counsel John Durham’s final report, which includes the underlying intelligence he reviewed.

The declassification of the classified annex is being done in close coordination between CIA Director John Ratcliffe, Patel, Director of National Intelligence Tulsi Gabbard, Attorney General Pam Bondi and acting National Security Agency Director William Hartman. (read more)

There is a lot of interest in the “credible foreign source” who told the CIA about the FBI operation to work closely with Hillary Clinton to exonerate herself and frame candidate Donald Trump.

Undead FOIA had a research report in March of this year that might answer the question.

[…] On August 3, 2016, then CIA Director John Brennan briefed President Obama, then Vice President Joe Biden, Attorney General Loretta Lynch, FBI Director James Comey and other senior officials on highly classified memorandums authored by Dutch intelligence with details of Clinton’s alleged plans.

The next day, Brennan called Alexander Bortnikov, the head of Russia’s FSB intelligence network. Brennan would tell members of the House Intelligence Committee in 2017 that he called Bortnikov to warn Russia to stop interfering in America’s elections.

That call apparently led to an immediate shift in Cozy Bear, cutting off the Dutch’s access and compromised friendly assets working for Western Intelligence. The call also had the effect of stopping additional memorandums that would have shed light on Clinton’s plans. (MORE)

It looks like Brennan called Russian FSB in order to compromise the Dutch source and stop the information from coming.