https://www.telegraph.co.uk/news/worldnews/northamerica/usa/7237002/US-admits-salvaging-sunken-Soviet-submarine.html
The CIA has always refused to confirm even the barest details of Project Azorian, a daring 1974 exercise that was backed by the industrialist Howard Hughes and estimated to have cost £1 billion in today's money.
However, following an application to declassify the information under the US Freedom of Information Act, the CIA has released an internal account of the mission, albeit with some of the biggest mysteries still unanswered.
Always something unanswered with the clowns…