Oswald and the CIA

In the category of essential books on the Kennedy assassination, one of the most essential is John Newman's Oswald and the CIA. I read the first edition some years back but a second edition came out in June and I would like to quote one paragraph from it, courtesy of John Simkin's JFK Education Forum.

The person who designed this plot had to have access to all of the information on Oswald at CIA HQS. The person who designed this plot had to have the authority to alter how information on Oswald was kept at CIA HQS. The person who designed this plot had the authority to alter how information on Oswald was kept at CIA HQS. The person who designed this plot had to have access to project TUMBLEWEED, the sensitive joint agency operation against the KGB assassin, Valery Kosikov. The person who designed this plot had the authority to instigate a counterintelligence operation in the Cuban affairs staff (SAS) at CIA HQS. In my view, there is only one person whose hands fit into these gloves: James Jesus Angleton, Chief of CIA's Counterintelligence Staff.